All-time weather records — Fort Collins, CO

Record high
102.9°F
July 21, 2005
Record low
-41.1°F
February 1, 1951
Wettest day
4.63 in
July 29, 1997

Climate change signal in Fort Collins

24.3%

of Fort Collins's all-time daily heat records were set in the last decade (89 of 366 records since 2015).

2.5%

of all-time daily cold records were set in the last decade (9 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 #
1890s
25
51
1900s
11
73
1910s
16
53
1920s
15
30
1930s
22
29
1940s
20
35
1950s
24
28
1960s
10
26
1970s
16
8
1980s
26
13
1990s
20
7
2000s
52
2
2010s
48
4
2020s
61
7

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 1894, the latest in 2026. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 75.0°F — Jan 26, 2015 -38.0°F — Jan 17, 1930 0.86 in — Jan 8, 1962
February 77.0°F — Feb 10, 2017 -41.1°F — Feb 1, 1951 1.63 in — Feb 3, 2024
March 91.0°F — Mar 21, 2026 -31.0°F — Mar 6, 1943 3.48 in — Mar 6, 1990
April 89.1°F — Apr 30, 1992 -9.9°F — Apr 4, 1945 2.41 in — Apr 30, 1999
May 97.0°F — May 29, 2000 12.0°F — May 6, 1917 3.21 in — May 13, 1961
June 102.0°F — Jun 23, 1954 28.9°F — Jun 13, 1947 3.54 in — Jun 4, 1949
July 102.9°F — Jul 21, 2005 36.0°F — Jul 4, 1903 4.63 in — Jul 29, 1997
August 100.0°F — Aug 1, 1902 32.0°F — Aug 25, 1910 3.06 in — Aug 3, 1951
September 99.0°F — Sep 2, 2019 18.0°F — Sep 30, 1985 4.34 in — Sep 21, 1902
October 88.0°F — Oct 2, 2024 -8.0°F — Oct 31, 1905 2.19 in — Oct 16, 1942
November 81.0°F — Nov 8, 2006 -20.9°F — Nov 13, 1916 1.26 in — Nov 20, 1979
December 75.9°F — Dec 11, 1939 -35.0°F — Dec 9, 1919 1.75 in — Dec 1, 1913

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