{
 "number": 1039,
 "headline": "4 counties set all-time record highs in July 21",
 "standfirst": "Across Colorado, the highest readings in each county's series since 1951. The warmest was Saguache, Colorado, at 87.5\u00b0F.",
 "desk": "record",
 "dateline": {
  "place": "Colorado",
  "state": null,
  "lat": null,
  "lon": null,
  "site_key": "colorado",
  "site_name": "Forecast Colorado",
  "site_url": "https://forecastcolorado.com",
  "accent": "#8f74b8"
 },
 "edition": "2026-09-10",
 "published": "2026-09-10T12:29:55Z",
 "updated": null,
 "access": "free",
 "body_html": "<p>Between July 21 and July 21, 2026, 4 counties across 1 state 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.</p><table class=\"tbl\"><thead><tr><th>County</th><th>State</th><th class=\"num\">\u00b0F</th><th>Date</th></tr></thead><tbody><tr><td>Saguache</td><td>Colorado</td><td class=\"mono num\">87.5</td><td class=\"mono\">Jul 21</td></tr><tr><td>Rio Grande</td><td>Colorado</td><td class=\"mono num\">86.4</td><td class=\"mono\">Jul 21</td></tr><tr><td>Gunnison</td><td>Colorado</td><td class=\"mono num\">86.2</td><td class=\"mono\">Jul 21</td></tr><tr><td>Lake</td><td>Colorado</td><td class=\"mono num\">80.4</td><td class=\"mono\">Jul 21</td></tr></tbody></table>",
 "body_key": null,
 "teaser_html": "",
 "claims": [
  {
   "text": "counties setting an all-time high",
   "value": 4.0,
   "unit": "counties",
   "normal": null,
   "rank": null,
   "of": 3107,
   "period": "1951-present",
   "source": "NOAA/NCEI nClimGrid-Daily"
  },
  {
   "text": "highest in the outbreak \u2014 Saguache, Colorado",
   "value": 87.5,
   "unit": "\u00b0F",
   "normal": null,
   "rank": 1,
   "of": 4,
   "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": 4,
   "states": [
    "CO"
   ],
   "window": [
    "2026-07-21",
    "2026-07-21"
   ],
   "norm_period": "1996\u20132025"
  }
 },
 "strength": 0.614,
 "tags": [
  "records",
  "high",
  "co"
 ],
 "supersedes": null,
 "superseded_by": null,
 "source": "wire",
 "canonical": null,
 "slug": "4-counties-set-all-time-record-highs-in-july-21",
 "path": "/mp/1039/",
 "url": "https://forecastpost.com/mp/1039/",
 "desk_label": "The Record",
 "digest": "af466eedfc7ee6369bca2f31458f776ffae43e29a51b7e6b0fbfa7fddbd5bb36"
}