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Built 2026-10-19 (19 October 2026)

Days at or above 90 F (32.2 C) in Denver

Denver has had days with a maximum temperature at or above 90 F (32.2 C) in 30 years, most in 2020 with 75. Days per year, season span, streaks and every date.

Key Facts for Denver

  • Denver has had days with a maximum temperature at or above 90 F (32.2 C) in 30 years, 1,444 days in all.
  • The most in one year was 75 days in 2020.
  • In 2026, the latest year on file, there were 65 such days.
  • The earliest first date in a year was 10 May 2018.
  • The latest last date in a year was 30 September 2023.
  • The longest run inside a single year was 24 days in 2008.
  • 4 years with under 90 percent of days observed are left out of these rankings.

Days per Year

30 years, 1,444 days
Days at or above 90 F (32.2 C) per year in Denver Days per year in Denver with a maximum temperature at or above 90 F (32.2 C). The line is the decade average. The most was 75 in 2020. Grey bars are years with under 90 percent of days observed, left out of rankings. 0204060801996: 381997: 241998: 361999: 162000: 612001: 462002: 562003: 442004: 202005: 552006: 542007: 542008: 472009: 182010: 492011: 502012: 732014: 292015: 482016: 552017: 482018: 592019: 482020: 752021: 592022: 672023: 392024: 642025: 472026: 65199620062017
Days per year in Denver with a maximum temperature at or above 90 F (32.2 C). The line is the decade average. The most was 75 in 2020. Grey bars are years with under 90 percent of days observed, left out of rankings.
Days at or above 90 F (32.2 C) per year in Denver
YearDaysDecade average
19963828.5
19972428.5
19983628.5
19991628.5
20006145.5
20014645.5
20025645.5
20034445.5
20042045.5
20055545.5
20065445.5
20075445.5
20084745.5
20091845.5
20104951
20115051
20127351
20142951
20154851
20165551
20174851
20185951
20194851
20207559.4
20215959.4
20226759.4
20233959.4
20246459.4
20254759.4
20266559.4

Season Span

earliest 10 May, latest 30 September
First to last qualifying date each year in Denver For each year, a bar from the first to the last day in Denver meeting 90 F (32.2 C). Long bars mean a long season. 1996: 16 May 1996 to 10 September 19961997: 1 June 1997 to 24 August 19971998: 25 June 1998 to 25 September 19981999: 25 June 1999 to 27 August 19992000: 29 May 2000 to 17 September 20002001: 10 June 2001 to 4 September 20012002: 30 May 2002 to 7 September 20022003: 29 May 2003 to 27 August 20032004: 6 June 2004 to 18 September 20042005: 20 May 2005 to 20 September 20052006: 21 May 2006 to 30 August 20062007: 10 June 2007 to 4 September 20072008: 10 June 2008 to 31 August 20082009: 19 May 2009 to 1 September 20092010: 28 May 2010 to 28 September 20102011: 2 June 2011 to 1 September 20112012: 22 May 2012 to 11 September 20122014: 3 June 2014 to 18 September 20142015: 19 June 2015 to 27 September 20152016: 10 June 2016 to 20 September 20162017: 9 June 2017 to 21 September 20172018: 10 May 2018 to 18 September 20182019: 26 June 2019 to 15 September 20192020: 19 May 2020 to 24 September 20202021: 5 June 2021 to 18 September 20212022: 11 May 2022 to 20 September 20222023: 27 June 2023 to 30 September 20232024: 5 June 2024 to 29 September 20242025: 14 June 2025 to 10 September 20252026: 6 June 2026 to 13 September 202619962000200420082012201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day in Denver meeting 90 F (32.2 C). Long bars mean a long season.
First to last qualifying date each year in Denver
YearFirst dateLast date
19961996-05-161996-09-10
19971997-06-011997-08-24
19981998-06-251998-09-25
19991999-06-251999-08-27
20002000-05-292000-09-17
20012001-06-102001-09-04
20022002-05-302002-09-07
20032003-05-292003-08-27
20042004-06-062004-09-18
20052005-05-202005-09-20
20062006-05-212006-08-30
20072007-06-102007-09-04
20082008-06-102008-08-31
20092009-05-192009-09-01
20102010-05-282010-09-28
20112011-06-022011-09-01
20122012-05-222012-09-11
20142014-06-032014-09-18
20152015-06-192015-09-27
20162016-06-102016-09-20
20172017-06-092017-09-21
20182018-05-102018-09-18
20192019-06-262019-09-15
20202020-05-192020-09-24
20212021-06-052021-09-18
20222022-05-112022-09-20
20232023-06-272023-09-30
20242024-06-052024-09-29
20252025-06-142025-09-10
20262026-06-062026-09-13

Every Year

Days at or above 90 F (32.2 C) per year in Denver
YearDaysFirst dateLast dateLongest streak in yearCoverage
2026656 June 202613 September 202612 daysIncomplete, not ranked
20254714 June 202510 September 20256 daysComplete
2024645 June 202429 September 202415 daysComplete
20233927 June 202330 September 202310 daysComplete
20226711 May 202220 September 202212 daysComplete
2021595 June 202118 September 20218 daysComplete
20207519 May 202024 September 202017 daysComplete
20194826 June 201915 September 20199 daysComplete
20185910 May 201818 September 20189 daysComplete
2017489 June 201721 September 20179 daysComplete
20165510 June 201620 September 201612 daysComplete
20154819 June 201527 September 20156 daysComplete
2014293 June 201418 September 20149 daysComplete
20127322 May 201211 September 201224 daysComplete
2011502 June 20111 September 201118 daysComplete
20104928 May 201028 September 20108 daysComplete
20091819 May 20091 September 20093 daysComplete
20084710 June 200831 August 200824 daysComplete
20075410 June 20074 September 200711 daysComplete
20065421 May 200630 August 200610 daysComplete
20055520 May 200520 September 200512 daysComplete
2004206 June 200418 September 20045 daysComplete
20034429 May 200327 August 200312 daysComplete
20025630 May 20027 September 200213 daysComplete
20014610 June 20014 September 200111 daysComplete
20006129 May 200017 September 200017 daysComplete
19991625 June 199927 August 19993 daysComplete
19983625 June 199825 September 19985 daysComplete
1997241 June 199724 August 19975 daysComplete
19963816 May 199610 September 19967 daysComplete
Decade averages for Days at or above 90 F (32.2 C) in Denver
DecadeAverage days per yearYears counted
1990s28.54
2000s45.510
2010s51.09
2020s58.56

Compare with your own threshold in the threshold explorer. Fahrenheit thresholds are converted to tenths of a degree Celsius once, rounding half up.

Download the Data

  • Data for Days at or above 90 F (32.2 C) in Denver, by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site from the threaded city record.

Data as of . Last revised (2026-10-17).