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Built 2026-10-19 (19 October 2026)

Days at or above 35 C (95 F) in Denver

Denver has had days with a maximum temperature at or above 35 C (95 F) in 30 years, most in 2012 with 42. Days per year, season span, streaks and every date.

Key Facts for Denver

  • Denver has had days with a maximum temperature at or above 35 C (95 F) in 30 years, 567 days in all.
  • The most in one year was 42 days in 2012.
  • In 2026, the latest year on file, there were 26 such days.
  • The earliest first date in a year was 1 June 2002.
  • The latest last date in a year was 19 September 2010.
  • The longest run inside a single year was 14 days in 2012.
  • 4 years with under 90 percent of days observed are left out of these rankings.

Days per Year

30 years, 567 days
Days at or above 35 C (95 F) per year in Denver Days per year in Denver with a maximum temperature at or above 35 C (95 F). The line is the decade average. The most was 42 in 2012. Grey bars are years with under 90 percent of days observed, left out of rankings. 02040601996: 71997: 71998: 101999: 22000: 212001: 122002: 162003: 152004: 72005: 222006: 242007: 232008: 222009: 22010: 142011: 242012: 422014: 92015: 122016: 182017: 192018: 262019: 202020: 372021: 292022: 362023: 162024: 302025: 192026: 26199620062017
Days per year in Denver with a maximum temperature at or above 35 C (95 F). The line is the decade average. The most was 42 in 2012. Grey bars are years with under 90 percent of days observed, left out of rankings.
Days at or above 35 C (95 F) per year in Denver
YearDaysDecade average
199676.5
199776.5
1998106.5
199926.5
20002116.4
20011216.4
20021616.4
20031516.4
2004716.4
20052216.4
20062416.4
20072316.4
20082216.4
2009216.4
20101420.4
20112420.4
20124220.4
2014920.4
20151220.4
20161820.4
20171920.4
20182620.4
20192020.4
20203727.6
20212927.6
20223627.6
20231627.6
20243027.6
20251927.6
20262627.6

Season Span

earliest 1 June, latest 19 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 35 C (95 F). Long bars mean a long season. 1996: 2 July 1996 to 13 August 19961997: 22 June 1997 to 23 July 19971998: 2 July 1998 to 5 September 19981999: 2 July 1999 to 4 July 19992000: 8 June 2000 to 17 September 20002001: 29 June 2001 to 19 August 20012002: 1 June 2002 to 18 August 20022003: 8 July 2003 to 22 August 20032004: 6 June 2004 to 1 August 20042005: 2 July 2005 to 30 August 20052006: 6 June 2006 to 23 August 20062007: 17 June 2007 to 26 August 20072008: 26 June 2008 to 4 August 20082009: 22 August 2009 to 23 August 20092010: 24 June 2010 to 19 September 20102011: 28 June 2011 to 1 September 20112012: 9 June 2012 to 1 September 20122014: 5 July 2014 to 24 July 20142015: 4 July 2015 to 30 August 20152016: 19 June 2016 to 10 August 20162017: 16 June 2017 to 3 September 20172018: 5 June 2018 to 13 September 20182019: 28 June 2019 to 5 September 20192020: 5 June 2020 to 6 September 20202021: 10 June 2021 to 11 September 20212022: 11 June 2022 to 8 September 20222023: 17 July 2023 to 2 September 20232024: 7 June 2024 to 21 August 20242025: 20 June 2025 to 21 August 20252026: 27 June 2026 to 28 August 202619962000200420082012201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day in Denver meeting 35 C (95 F). Long bars mean a long season.
First to last qualifying date each year in Denver
YearFirst dateLast date
19961996-07-021996-08-13
19971997-06-221997-07-23
19981998-07-021998-09-05
19991999-07-021999-07-04
20002000-06-082000-09-17
20012001-06-292001-08-19
20022002-06-012002-08-18
20032003-07-082003-08-22
20042004-06-062004-08-01
20052005-07-022005-08-30
20062006-06-062006-08-23
20072007-06-172007-08-26
20082008-06-262008-08-04
20092009-08-222009-08-23
20102010-06-242010-09-19
20112011-06-282011-09-01
20122012-06-092012-09-01
20142014-07-052014-07-24
20152015-07-042015-08-30
20162016-06-192016-08-10
20172017-06-162017-09-03
20182018-06-052018-09-13
20192019-06-282019-09-05
20202020-06-052020-09-06
20212021-06-102021-09-11
20222022-06-112022-09-08
20232023-07-172023-09-02
20242024-06-072024-08-21
20252025-06-202025-08-21
20262026-06-272026-08-28

Every Year

Days at or above 35 C (95 F) per year in Denver
YearDaysFirst dateLast dateLongest streak in yearCoverage
20262627 June 202628 August 20267 daysIncomplete, not ranked
20251920 June 202521 August 20255 daysComplete
2024307 June 202421 August 20249 daysComplete
20231617 July 20232 September 20235 daysComplete
20223611 June 20228 September 20227 daysComplete
20212910 June 202111 September 20215 daysComplete
2020375 June 20206 September 20208 daysComplete
20192028 June 20195 September 20194 daysComplete
2018265 June 201813 September 20185 daysComplete
20171916 June 20173 September 20175 daysComplete
20161819 June 201610 August 20165 daysComplete
2015124 July 201530 August 20153 daysComplete
201495 July 201424 July 20144 daysComplete
2012429 June 20121 September 201214 daysComplete
20112428 June 20111 September 20114 daysComplete
20101424 June 201019 September 20102 daysComplete
2009222 August 200923 August 20092 daysComplete
20082226 June 20084 August 20086 daysComplete
20072317 June 200726 August 20074 daysComplete
2006246 June 200623 August 20064 daysComplete
2005222 July 200530 August 200510 daysComplete
200476 June 20041 August 20043 daysComplete
2003158 July 200322 August 20036 daysComplete
2002161 June 200218 August 20023 daysComplete
20011229 June 200119 August 20014 daysComplete
2000218 June 200017 September 20003 daysComplete
199922 July 19994 July 19991 daysComplete
1998102 July 19985 September 19983 daysComplete
1997722 June 199723 July 19974 daysComplete
199672 July 199613 August 19964 daysComplete
Decade averages for Days at or above 35 C (95 F) in Denver
DecadeAverage days per yearYears counted
1990s6.54
2000s16.410
2010s20.49
2020s27.86

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 35 C (95 F) 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).