{
 "topic": "climate",
 "site": "climatedata.dev",
 "parent": {
  "id": "us-mt",
  "name": "Montana",
  "level": "us-state",
  "path": "us/mt"
 },
 "child_level": "us-county",
 "child_noun": "county",
 "child_nouns": "counties",
 "compare_label": "every Montana county",
 "question": "Was September normal in Montana?",
 "answer": {
  "verdict": "Warmer than normal",
  "value": 57.3,
  "unit": "°F",
  "digits": 1,
  "label": "Statewide average temperature, September 2026",
  "lines": [
   "+1.6°F against the 1991–2020 normal of 55.7°F",
   "23rd warmest September of 132 since 1895",
   "Of 56 counties: 5 much warmer, 43 warmer, 8 near normal",
   "Furthest above normal: Carter County (+4.7°F); furthest below: Ravalli County (-1.3°F)",
   "Precipitation 2.18 in, 157% of normal: wetter than normal"
  ]
 },
 "as_of": "2026-09",
 "as_of_label": "September 2026",
 "measure": {
  "value_label": "Average",
  "unit": "°F",
  "digits": 1,
  "change_label": "From normal",
  "change_unit": "°F",
  "change_digits": 1,
  "bin_step": 1,
  "rank_label": "Record rank",
  "rank_note": "Record rank: 1 is the warmest September on record for that county.",
  "change_text": "how far each county was from its own 1991–2020 normal",
  "verdict_text": "the same five words as each county's page, from much cooler to much warmer than normal",
  "change_button": "Degrees from normal",
  "map_description": "September 2026 by county: 5 much warmer, 43 warmer, 8 near normal; furthest above normal Carter County (+4.7°F), furthest below Ravalli County (-1.3°F).",
  "map_indicator": "Monthly average temperature minus the county's 1991–2020 normal for September, °F (NOAA nClimDiv via climatedata.dev); words from each county's rank in its own record"
 },
 "categories": [
  {
   "key": "much-warmer",
   "label": "Much warmer than normal",
   "count": 5,
   "step": "w4"
  },
  {
   "key": "warmer",
   "label": "Warmer than normal",
   "count": 43,
   "step": "w2"
  },
  {
   "key": "near",
   "label": "Near normal",
   "count": 8,
   "step": "n"
  },
  {
   "key": "cooler",
   "label": "Cooler than normal",
   "count": 0,
   "step": "c2"
  },
  {
   "key": "much-cooler",
   "label": "Much cooler than normal",
   "count": 0,
   "step": "c4"
  }
 ],
 "places": [
  {
   "id": "us-county-30011",
   "name": "Carter County",
   "path": "us/mt/carter-county",
   "value": 63.2,
   "normal": 58.5,
   "anomaly": 4.7,
   "change": 4.7,
   "rank_warm": 5,
   "n": 132,
   "verdict": "Much warmer than normal",
   "category": "much-warmer",
   "shape": true
  },
  {
   "id": "us-county-30025",
   "name": "Fallon County",
   "path": "us/mt/fallon-county",
   "value": 63,
   "normal": 58.5,
   "anomaly": 4.5,
   "change": 4.5,
   "rank_warm": 9,
   "n": 132,
   "verdict": "Much warmer than normal",
   "category": "much-warmer",
   "shape": true
  },
  {
   "id": "us-county-30109",
   "name": "Wibaux County",
   "path": "us/mt/wibaux-county",
   "value": 62.8,
   "normal": 58.5,
   "anomaly": 4.3,
   "change": 4.3,
   "rank_warm": 12,
   "n": 132,
   "verdict": "Much warmer than normal",
   "category": "much-warmer",
   "shape": true
  },
  {
   "id": "us-county-30075",
   "name": "Powder River County",
   "path": "us/mt/powder-river-county",
   "value": 63.6,
   "normal": 59.6,
   "anomaly": 4,
   "change": 4,
   "rank_warm": 10,
   "n": 132,
   "verdict": "Much warmer than normal",
   "category": "much-warmer",
   "shape": true
  },
  {
   "id": "us-county-30017",
   "name": "Custer County",
   "path": "us/mt/custer-county",
   "value": 63.8,
   "normal": 59.9,
   "anomaly": 3.9,
   "change": 3.9,
   "rank_warm": 14,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30079",
   "name": "Prairie County",
   "path": "us/mt/prairie-county",
   "value": 63,
   "normal": 59.1,
   "anomaly": 3.9,
   "change": 3.9,
   "rank_warm": 14,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30021",
   "name": "Dawson County",
   "path": "us/mt/dawson-county",
   "value": 62.2,
   "normal": 58.5,
   "anomaly": 3.7,
   "change": 3.7,
   "rank_warm": 15,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30091",
   "name": "Sheridan County",
   "path": "us/mt/sheridan-county",
   "value": 60.1,
   "normal": 56.4,
   "anomaly": 3.7,
   "change": 3.7,
   "rank_warm": 16,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30055",
   "name": "McCone County",
   "path": "us/mt/mccone-county",
   "value": 61.9,
   "normal": 58.3,
   "anomaly": 3.6,
   "change": 3.6,
   "rank_warm": 14,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30085",
   "name": "Roosevelt County",
   "path": "us/mt/roosevelt-county",
   "value": 61.1,
   "normal": 57.5,
   "anomaly": 3.6,
   "change": 3.6,
   "rank_warm": 15,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30083",
   "name": "Richland County",
   "path": "us/mt/richland-county",
   "value": 61.8,
   "normal": 58.3,
   "anomaly": 3.5,
   "change": 3.5,
   "rank_warm": 15,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30019",
   "name": "Daniels County",
   "path": "us/mt/daniels-county",
   "value": 58.4,
   "normal": 55.3,
   "anomaly": 3.1,
   "change": 3.1,
   "rank_warm": 15,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30003",
   "name": "Big Horn County",
   "path": "us/mt/big-horn-county",
   "value": 61.4,
   "normal": 58.5,
   "anomaly": 2.9,
   "change": 2.9,
   "rank_warm": 15,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30009",
   "name": "Carbon County",
   "path": "us/mt/carbon-county",
   "value": 58.4,
   "normal": 55.5,
   "anomaly": 2.9,
   "change": 2.9,
   "rank_warm": 13,
   "n": 132,
   "verdict": "Much warmer than normal",
   "category": "much-warmer",
   "shape": true
  },
  {
   "id": "us-county-30087",
   "name": "Rosebud County",
   "path": "us/mt/rosebud-county",
   "value": 62,
   "normal": 59.1,
   "anomaly": 2.9,
   "change": 2.9,
   "rank_warm": 17,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30103",
   "name": "Treasure County",
   "path": "us/mt/treasure-county",
   "value": 61.8,
   "normal": 59.4,
   "anomaly": 2.4,
   "change": 2.4,
   "rank_warm": 16,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30111",
   "name": "Yellowstone County",
   "path": "us/mt/yellowstone-county",
   "value": 62,
   "normal": 59.6,
   "anomaly": 2.4,
   "change": 2.4,
   "rank_warm": 18,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30095",
   "name": "Stillwater County",
   "path": "us/mt/stillwater-county",
   "value": 58.5,
   "normal": 56.2,
   "anomaly": 2.3,
   "change": 2.3,
   "rank_warm": 18,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30105",
   "name": "Valley County",
   "path": "us/mt/valley-county",
   "value": 59.3,
   "normal": 57,
   "anomaly": 2.3,
   "change": 2.3,
   "rank_warm": 24,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30033",
   "name": "Garfield County",
   "path": "us/mt/garfield-county",
   "value": 60.9,
   "normal": 58.7,
   "anomaly": 2.2,
   "change": 2.2,
   "rank_warm": 24,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30065",
   "name": "Musselshell County",
   "path": "us/mt/musselshell-county",
   "value": 60.9,
   "normal": 58.9,
   "anomaly": 2,
   "change": 2,
   "rank_warm": 22,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30071",
   "name": "Phillips County",
   "path": "us/mt/phillips-county",
   "value": 60,
   "normal": 58.1,
   "anomaly": 1.9,
   "change": 1.9,
   "rank_warm": 25,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30015",
   "name": "Chouteau County",
   "path": "us/mt/chouteau-county",
   "value": 59,
   "normal": 57.3,
   "anomaly": 1.7,
   "change": 1.7,
   "rank_warm": 23,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30051",
   "name": "Liberty County",
   "path": "us/mt/liberty-county",
   "value": 57.4,
   "normal": 55.7,
   "anomaly": 1.7,
   "change": 1.7,
   "rank_warm": 23,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30069",
   "name": "Petroleum County",
   "path": "us/mt/petroleum-county",
   "value": 61.4,
   "normal": 59.7,
   "anomaly": 1.7,
   "change": 1.7,
   "rank_warm": 28,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30027",
   "name": "Fergus County",
   "path": "us/mt/fergus-county",
   "value": 58.6,
   "normal": 57,
   "anomaly": 1.6,
   "change": 1.6,
   "rank_warm": 28,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30041",
   "name": "Hill County",
   "path": "us/mt/hill-county",
   "value": 57.6,
   "normal": 56,
   "anomaly": 1.6,
   "change": 1.6,
   "rank_warm": 25,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30097",
   "name": "Sweet Grass County",
   "path": "us/mt/sweet-grass-county",
   "value": 56.6,
   "normal": 55,
   "anomaly": 1.6,
   "change": 1.6,
   "rank_warm": 24,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30005",
   "name": "Blaine County",
   "path": "us/mt/blaine-county",
   "value": 58,
   "normal": 56.5,
   "anomaly": 1.5,
   "change": 1.5,
   "rank_warm": 30,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30067",
   "name": "Park County",
   "path": "us/mt/park-county",
   "value": 53,
   "normal": 51.5,
   "anomaly": 1.5,
   "change": 1.5,
   "rank_warm": 23,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30013",
   "name": "Cascade County",
   "path": "us/mt/cascade-county",
   "value": 57.2,
   "normal": 55.9,
   "anomaly": 1.3,
   "change": 1.3,
   "rank_warm": 27,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30037",
   "name": "Golden Valley County",
   "path": "us/mt/golden-valley-county",
   "value": 58.4,
   "normal": 57.2,
   "anomaly": 1.2,
   "change": 1.2,
   "rank_warm": 32,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30101",
   "name": "Toole County",
   "path": "us/mt/toole-county",
   "value": 56.7,
   "normal": 55.5,
   "anomaly": 1.2,
   "change": 1.2,
   "rank_warm": 25,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30045",
   "name": "Judith Basin County",
   "path": "us/mt/judith-basin-county",
   "value": 55.2,
   "normal": 54.1,
   "anomaly": 1.1,
   "change": 1.1,
   "rank_warm": 34,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30031",
   "name": "Gallatin County",
   "path": "us/mt/gallatin-county",
   "value": 53.5,
   "normal": 52.5,
   "anomaly": 1,
   "change": 1,
   "rank_warm": 30,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30059",
   "name": "Meagher County",
   "path": "us/mt/meagher-county",
   "value": 53,
   "normal": 52,
   "anomaly": 1,
   "change": 1,
   "rank_warm": 30,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30049",
   "name": "Lewis and Clark County",
   "path": "us/mt/lewis-and-clark-county",
   "value": 53.6,
   "normal": 52.9,
   "anomaly": 0.7,
   "change": 0.7,
   "rank_warm": 30,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30073",
   "name": "Pondera County",
   "path": "us/mt/pondera-county",
   "value": 55.2,
   "normal": 54.5,
   "anomaly": 0.7,
   "change": 0.7,
   "rank_warm": 27,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30099",
   "name": "Teton County",
   "path": "us/mt/teton-county",
   "value": 54.6,
   "normal": 53.9,
   "anomaly": 0.7,
   "change": 0.7,
   "rank_warm": 29,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30107",
   "name": "Wheatland County",
   "path": "us/mt/wheatland-county",
   "value": 55.9,
   "normal": 55.2,
   "anomaly": 0.7,
   "change": 0.7,
   "rank_warm": 36,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30007",
   "name": "Broadwater County",
   "path": "us/mt/broadwater-county",
   "value": 56,
   "normal": 55.4,
   "anomaly": 0.6,
   "change": 0.6,
   "rank_warm": 32,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30093",
   "name": "Silver Bow County",
   "path": "us/mt/silver-bow-county",
   "value": 52,
   "normal": 51.7,
   "anomaly": 0.3,
   "change": 0.3,
   "rank_warm": 37,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30035",
   "name": "Glacier County",
   "path": "us/mt/glacier-county",
   "value": 51.9,
   "normal": 51.8,
   "anomaly": 0.1,
   "change": 0.1,
   "rank_warm": 32,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30057",
   "name": "Madison County",
   "path": "us/mt/madison-county",
   "value": 52.1,
   "normal": 52.1,
   "anomaly": 0,
   "change": 0,
   "rank_warm": 42,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30043",
   "name": "Jefferson County",
   "path": "us/mt/jefferson-county",
   "value": 52.9,
   "normal": 53,
   "anomaly": -0.1,
   "change": -0.1,
   "rank_warm": 41,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30001",
   "name": "Beaverhead County",
   "path": "us/mt/beaverhead-county",
   "value": 50.5,
   "normal": 50.8,
   "anomaly": -0.3,
   "change": -0.3,
   "rank_warm": 43,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30023",
   "name": "Deer Lodge County",
   "path": "us/mt/deer-lodge-county",
   "value": 49.7,
   "normal": 50,
   "anomaly": -0.3,
   "change": -0.3,
   "rank_warm": 47,
   "n": 132,
   "verdict": "Near normal",
   "category": "near",
   "shape": true
  },
  {
   "id": "us-county-30029",
   "name": "Flathead County",
   "path": "us/mt/flathead-county",
   "value": 51.3,
   "normal": 51.6,
   "anomaly": -0.3,
   "change": -0.3,
   "rank_warm": 38,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30077",
   "name": "Powell County",
   "path": "us/mt/powell-county",
   "value": 51.2,
   "normal": 51.5,
   "anomaly": -0.3,
   "change": -0.3,
   "rank_warm": 41,
   "n": 132,
   "verdict": "Warmer than normal",
   "category": "warmer",
   "shape": true
  },
  {
   "id": "us-county-30039",
   "name": "Granite County",
   "path": "us/mt/granite-county",
   "value": 50.1,
   "normal": 50.8,
   "anomaly": -0.7,
   "change": -0.7,
   "rank_warm": 57,
   "n": 132,
   "verdict": "Near normal",
   "category": "near",
   "shape": true
  },
  {
   "id": "us-county-30047",
   "name": "Lake County",
   "path": "us/mt/lake-county",
   "value": 54.8,
   "normal": 55.5,
   "anomaly": -0.7,
   "change": -0.7,
   "rank_warm": 51,
   "n": 132,
   "verdict": "Near normal",
   "category": "near",
   "shape": true
  },
  {
   "id": "us-county-30061",
   "name": "Mineral County",
   "path": "us/mt/mineral-county",
   "value": 52.9,
   "normal": 53.9,
   "anomaly": -1,
   "change": -1,
   "rank_warm": 62,
   "n": 132,
   "verdict": "Near normal",
   "category": "near",
   "shape": true
  },
  {
   "id": "us-county-30063",
   "name": "Missoula County",
   "path": "us/mt/missoula-county",
   "value": 52.2,
   "normal": 53.3,
   "anomaly": -1.1,
   "change": -1.1,
   "rank_warm": 61,
   "n": 132,
   "verdict": "Near normal",
   "category": "near",
   "shape": true
  },
  {
   "id": "us-county-30089",
   "name": "Sanders County",
   "path": "us/mt/sanders-county",
   "value": 53.9,
   "normal": 55,
   "anomaly": -1.1,
   "change": -1.1,
   "rank_warm": 59,
   "n": 132,
   "verdict": "Near normal",
   "category": "near",
   "shape": true
  },
  {
   "id": "us-county-30053",
   "name": "Lincoln County",
   "path": "us/mt/lincoln-county",
   "value": 52.1,
   "normal": 53.4,
   "anomaly": -1.3,
   "change": -1.3,
   "rank_warm": 59,
   "n": 132,
   "verdict": "Near normal",
   "category": "near",
   "shape": true
  },
  {
   "id": "us-county-30081",
   "name": "Ravalli County",
   "path": "us/mt/ravalli-county",
   "value": 50.7,
   "normal": 52,
   "anomaly": -1.3,
   "change": -1.3,
   "rank_warm": 71,
   "n": 132,
   "verdict": "Near normal",
   "category": "near",
   "shape": true
  }
 ],
 "no_data": [],
 "noaa_only": [],
 "charts": [
  {
   "id": "climate-state-history",
   "title": "Every September since 1895, Montana statewide",
   "description": "September 2026 averaged 57.3°F, +1.6°F against the 1991–2020 normal: the 23rd warmest September of 132 since 1895.",
   "indicator": "Monthly average temperature, °F (NOAA nClimDiv via climatedata.dev); normal = NOAA's 1991–2020 normal for that month",
   "subtitle": "Average temperature, °F. 2026 is highlighted; the line is the 1991–2020 normal.",
   "x": {
    "kind": "year"
   },
   "y": {
    "digits": 1,
    "unit": "°F"
   },
   "layers": [
    {
     "type": "dots",
     "name": "September average",
     "cls": "ctx",
     "points": [
      [
       1895,
       50.7
      ],
      [
       1896,
       49.4
      ],
      [
       1897,
       56.9
      ],
      [
       1898,
       53.5
      ],
      [
       1899,
       56
      ],
      [
       1900,
       52
      ],
      [
       1901,
       48.7
      ],
      [
       1902,
       51.3
      ],
      [
       1903,
       50.8
      ],
      [
       1904,
       54.3
      ],
      [
       1905,
       56.8
      ],
      [
       1906,
       56.8
      ],
      [
       1907,
       52.2
      ],
      [
       1908,
       56.1
      ],
      [
       1909,
       56
      ],
      [
       1910,
       52.4
      ],
      [
       1911,
       51.7
      ],
      [
       1912,
       47
      ],
      [
       1913,
       54.8
      ],
      [
       1914,
       54.2
      ],
      [
       1915,
       49.9
      ],
      [
       1916,
       52.6
      ],
      [
       1917,
       55.2
      ],
      [
       1918,
       53.5
      ],
      [
       1919,
       55.1
      ],
      [
       1920,
       55
      ],
      [
       1921,
       49.9
      ],
      [
       1922,
       57.9
      ],
      [
       1923,
       55.7
      ],
      [
       1924,
       53.7
      ],
      [
       1925,
       53.2
      ],
      [
       1926,
       46.7
      ],
      [
       1927,
       52.4
      ],
      [
       1928,
       53.2
      ],
      [
       1929,
       49.4
      ],
      [
       1930,
       54.7
      ],
      [
       1931,
       55.6
      ],
      [
       1932,
       54
      ],
      [
       1933,
       54.2
      ],
      [
       1934,
       49.7
      ],
      [
       1935,
       56.1
      ],
      [
       1936,
       55.5
      ],
      [
       1937,
       56.6
      ],
      [
       1938,
       60.8
      ],
      [
       1939,
       55.9
      ],
      [
       1940,
       59.6
      ],
      [
       1941,
       49.6
      ],
      [
       1942,
       53.9
      ],
      [
       1943,
       54.7
      ],
      [
       1944,
       54.8
      ],
      [
       1945,
       51.3
      ],
      [
       1946,
       53
      ],
      [
       1947,
       53.6
      ],
      [
       1948,
       56.7
      ],
      [
       1949,
       53.8
      ],
      [
       1950,
       52.7
      ],
      [
       1951,
       50.1
      ],
      [
       1952,
       57.5
      ],
      [
       1953,
       56.4
      ],
      [
       1954,
       53.4
      ],
      [
       1955,
       52.9
      ],
      [
       1956,
       54.8
      ],
      [
       1957,
       54.2
      ],
      [
       1958,
       54.8
      ],
      [
       1959,
       52
      ],
      [
       1960,
       55.5
      ],
      [
       1961,
       48.1
      ],
      [
       1962,
       53.2
      ],
      [
       1963,
       60
      ],
      [
       1964,
       50.7
      ],
      [
       1965,
       43.6
      ],
      [
       1966,
       58.8
      ],
      [
       1967,
       59.2
      ],
      [
       1968,
       53.8
      ],
      [
       1969,
       56.9
      ],
      [
       1970,
       51
      ],
      [
       1971,
       51.1
      ],
      [
       1972,
       50.3
      ],
      [
       1973,
       53
      ],
      [
       1974,
       52.2
      ],
      [
       1975,
       53.2
      ],
      [
       1976,
       56.7
      ],
      [
       1977,
       53.1
      ],
      [
       1978,
       55.4
      ],
      [
       1979,
       58.5
      ],
      [
       1980,
       54.7
      ],
      [
       1981,
       56.5
      ],
      [
       1982,
       52.7
      ],
      [
       1983,
       52.1
      ],
      [
       1984,
       49.1
      ],
      [
       1985,
       47.8
      ],
      [
       1986,
       48.9
      ],
      [
       1987,
       56.5
      ],
      [
       1988,
       53.8
      ],
      [
       1989,
       54.3
      ],
      [
       1990,
       60.3
      ],
      [
       1991,
       55.6
      ],
      [
       1992,
       53.4
      ],
      [
       1993,
       51.6
      ],
      [
       1994,
       58.6
      ],
      [
       1995,
       54.5
      ],
      [
       1996,
       52.6
      ],
      [
       1997,
       58.1
      ],
      [
       1998,
       61.4
      ],
      [
       1999,
       51.6
      ],
      [
       2000,
       54.4
      ],
      [
       2001,
       58.7
      ],
      [
       2002,
       55.7
      ],
      [
       2003,
       54.6
      ],
      [
       2004,
       54.1
      ],
      [
       2005,
       55.4
      ],
      [
       2006,
       54.8
      ],
      [
       2007,
       55
      ],
      [
       2008,
       53.6
      ],
      [
       2009,
       60.7
      ],
      [
       2010,
       54.1
      ],
      [
       2011,
       58.3
      ],
      [
       2012,
       58.2
      ],
      [
       2013,
       58.8
      ],
      [
       2014,
       55.1
      ],
      [
       2015,
       57.3
      ],
      [
       2016,
       54.8
      ],
      [
       2017,
       55.2
      ],
      [
       2018,
       53
      ],
      [
       2019,
       55
      ],
      [
       2020,
       57
      ],
      [
       2021,
       58.3
      ],
      [
       2022,
       60.6
      ],
      [
       2023,
       58.5
      ],
      [
       2024,
       61.1
      ],
      [
       2025,
       61.1
      ]
     ]
    },
    {
     "type": "rule",
     "name": "1991–2020 normal",
     "y": 55.7,
     "label": "normal 55.7°F"
    },
    {
     "type": "mark",
     "name": "September 2026",
     "series": "September average",
     "x": 2026,
     "y": 57.3,
     "label": "2026: 57.3°F"
    }
   ]
  }
 ],
 "limits": [
  "A statewide average is not the average of its counties: NOAA computes it from its own grid, weighted by area.",
  "The most recent months are preliminary and NOAA revises them in the next release."
 ],
 "method": "Each month is ranked against the same month in every year on record (since 1895 for most places). The top tenth of the record is 'much warmer than normal', the top third 'warmer', the middle third 'near normal'. Counties are coloured by the same five words.",
 "sources": [
  {
   "name": "climatedata.dev us-climate, version 2026-10-25.6c7474e6d8",
   "url": "https://climatedata.dev/",
   "license": "U.S. public domain"
  },
  {
   "name": "NOAA Monthly U.S. Climate Divisional Database (nClimDiv), statewide and national files",
   "url": "https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ncdc:C00005",
   "license": "U.S. public domain"
  },
  {
   "name": "climatedata.dev county-climate, version 2026-10-25.b4bbb5298a",
   "url": "https://climatedata.dev/",
   "license": "U.S. public domain"
  }
 ],
 "check": {
  "month": 9,
  "year": 2026,
  "value": 57.3,
  "normal": 55.7,
  "anomaly": 1.6,
  "rank_warm": 23,
  "n": 132,
  "verdict_words": [
   "Much warmer than normal",
   "Warmer than normal",
   "Near normal",
   "Cooler than normal",
   "Much cooler than normal"
  ],
  "code": "0240",
  "dataset": "us-climate",
  "version": "2026-10-25.6c7474e6d8",
  "noaa_sha256": {
   "tavg": "8e83b1a8e830d9f4cd87bbc17c3f80c534cde7b7015be8132964ecbff7a8441b",
   "tavg_normals": "5d3177ac26c9ce469da153d518b61d370e1493286908ee86846fae75102b414f",
   "pcpn": "4cb027fcacaa077dab05efe53c4a8a0a10a153c62e19cbdf3564410064e1015a"
  },
  "noaa_county_sha256": {
   "tavg": "edf9a954c7d7a5bed5ad32e448cfc78aacbf01261b94a4c5224094535108a489",
   "tavg_normals": "dbff5215d9471d6a94c5fd969ed2e168c680cabfd455b1c3764bd96e8d6f667a",
   "pcpn": "739fc3e9b529e04d406e914be1add2736ca3129c1103246ccebc2e5c76fd9d3a"
  }
 },
 "api": {
  "now": "/data/topics/climate/us-mt.json",
  "source": "https://api.climatedata.dev/v1/us-climate/tavg/us-mt.json",
  "source_label": "The climatedata.dev API it comes from (live, no key; every month since 1895 with its normal, anomaly and rank)"
 },
 "generated_at": "2026-10-26T14:11:52+00:00"
}