All-time weather records — Aspen, CO

Record high
91.9°F
July 1, 1983
Record low
-25.1°F
February 7, 1989
Wettest day
2.35 in
June 7, 1984

Climate change signal in Aspen

11.2%

of Aspen's all-time daily heat records were set in the last decade (41 of 366 records since 2015).

12.6%

of all-time daily cold records were set in the last decade (46 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1980s
81
106
1990s
100
114
2000s
117
63
2010s
36
56
2020s
32
27

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1980, the latest in 2026. Period of observation: 1980-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 57.9°F — Jan 17, 2000 -20.0°F — Jan 8, 1982 2.20 in — Jan 31, 2014
February 60.1°F — Feb 25, 1986 -25.1°F — Feb 7, 1989 1.92 in — Feb 21, 1996
March 68.0°F — Mar 5, 1987 -14.1°F — Mar 3, 2002 1.60 in — Mar 28, 1993
April 73.9°F — Apr 30, 2007 0.0°F — Apr 5, 1983 1.41 in — Apr 8, 2018
May 86.0°F — May 31, 2003 15.1°F — May 2, 2013 1.30 in — May 4, 2001
June 88.0°F — Jun 8, 2004 19.9°F — Jun 4, 1993 2.35 in — Jun 7, 1984
July 91.9°F — Jul 1, 1983 28.9°F — Jul 5, 1993 1.20 in — Jul 25, 2005
August 88.0°F — Aug 14, 1988 28.9°F — Aug 25, 1992 1.30 in — Aug 2, 2022
September 86.0°F — Sep 5, 1995 18.0°F — Sep 27, 1996 1.07 in — Sep 17, 2007
October 78.1°F — Oct 1, 2010 -5.1°F — Oct 27, 2020 1.48 in — Oct 29, 2023
November 70.0°F — Nov 15, 1999 -13.0°F — Nov 25, 2010 1.80 in — Nov 9, 1988
December 62.1°F — Dec 1, 1999 -23.1°F — Dec 18, 1996 1.48 in — Dec 17, 2016

Click a month to see every daily record for that month in Aspen.