{ "number": 1029, "headline": "62 counties set all-time record highs in July 12\u201315", "standfirst": "Across Colorado, Idaho, Michigan, Montana and 4 more, the highest readings in each county's series since 1951. The warmest was Prairie, Montana, at 112.9\u00b0F.", "desk": "record", "dateline": { "place": "The Midwest, the Northern Rockies and the Southwest", "state": null, "lat": null, "lon": null, "site_key": null, "site_name": null, "site_url": null, "accent": null }, "edition": "2026-09-10", "published": "2026-09-10T12:29:55Z", "updated": null, "access": "free", "body_html": "

Between July 12 and July 15, 2026, 62 counties across 8 states recorded the highest value in their county series, which begins in 1951. The series is NOAA/NCEI nClimGrid-Daily, a gridded county-area average \u2014 so these are areal extremes, not single-station readings, and they are not directly comparable to a co-op station's record book.

CountyState\u00b0FDate
PrairieMontana112.9Jul 13
CusterMontana112.8Jul 13
GarfieldMontana111.6Jul 13
DawsonMontana110.9Jul 13
PetroleumMontana110.9Jul 13
FallonMontana110.4Jul 13
McConeMontana110.4Jul 13
WibauxMontana110.1Jul 13
RosebudMontana109.9Jul 13
YellowstoneMontana109.8Jul 13
CarterMontana109.6Jul 13
Powder RiverMontana109.6Jul 13
Golden ValleyNorth Dakota109.5Jul 13
TreasureMontana109.4Jul 13
BowmanNorth Dakota109.4Jul 13
HardingSouth Dakota109.3Jul 13
MusselshellMontana109.2Jul 13
SlopeNorth Dakota108.9Jul 13
BillingsNorth Dakota108.7Jul 13
StarkNorth Dakota107.3Jul 13
Golden ValleyMontana105.9Jul 13
TooeleUtah105.6Jul 13
Big HornMontana105.3Jul 13
StillwaterMontana104.8Jul 13
CampbellWyoming104.6Jul 13
WashakieWyoming103.2Jul 13
JeffersonIdaho102.7Jul 13
CarbonMontana102.5Jul 13
DavisUtah102.5Jul 13
OneidaIdaho101.7Jul 13
Salt LakeUtah101.6Jul 13
JohnsonWyoming101.1Jul 13
SheridanWyoming100.9Jul 13
BannockIdaho100.8Jul 13
BinghamIdaho100.8Jul 13
Big HornWyoming100.4Jul 13
Hot SpringsWyoming99.8Jul 13
DickinsonMichigan99.8Jul 14
Sweet GrassMontana99.5Jul 13
WeberUtah99.5Jul 13
FranklinIdaho99.3Jul 13
IoscoMichigan98.9Jul 15
MarquetteMichigan98.7Jul 14
MadisonIdaho98.5Jul 13
CaribouIdaho98.0Jul 13
AlconaMichigan97.9Jul 15
BonnevilleIdaho97.7Jul 13
MoffatColorado97.6Jul 13
CacheUtah96.0Jul 13
AlgerMichigan95.9Jul 15
FremontWyoming95.8Jul 13
GallatinMontana95.5Jul 13
FremontIdaho95.4Jul 13
Rio BlancoColorado94.8Jul 13
ParkMontana94.6Jul 13
CarbonWyoming93.8Jul 13
LincolnWyoming93.3Jul 13
ParkWyoming93.1Jul 13
SubletteWyoming91.8Jul 13
RouttColorado90.6Jul 13
DoloresColorado89.7Jul 12
TetonWyoming89.1Jul 13
", "body_key": null, "teaser_html": "", "claims": [ { "text": "counties setting an all-time high", "value": 62.0, "unit": "counties", "normal": null, "rank": null, "of": 3107, "period": "1951-present", "source": "NOAA/NCEI nClimGrid-Daily" }, { "text": "highest in the outbreak \u2014 Prairie, Montana", "value": 112.9, "unit": "\u00b0F", "normal": null, "rank": 1, "of": 62, "period": "1951-present", "source": "NOAA/NCEI nClimGrid-Daily (county-area)" } ], "assets": [], "provenance": { "built_at": "2026-09-10T12:29:48Z", "model": "nClimGrid-Daily", "cycle": null, "stores": [ "/var/www/weather.city/data/records.json" ], "mint_sha256": null, "pairing_rule": "county-area daily extreme vs. the same county's series extreme over the full period of record", "detector": "records", "detector_version": "2", "inputs": { "generated": "2026-09-09T14:01:33Z", "n_counties": 62, "states": [ "CO", "ID", "MI", "MT", "ND", "SD", "UT", "WY" ], "window": [ "2026-07-12", "2026-07-15" ], "norm_period": "1996\u20132025" } }, "strength": 0.97, "tags": [ "records", "high", "co", "id", "mi", "mt", "nd", "sd" ], "supersedes": null, "superseded_by": null, "source": "wire", "canonical": null, "slug": "62-counties-set-all-time-record-highs-in-july-12-15", "path": "/mp/1029/", "url": "https://forecastpost.com/mp/1029/", "desk_label": "The Record", "digest": "0e5be5bfa0b7eeff1170b39cd5463df48653f655b3e35adbf1948976e723c0b7" }