All-time weather records — Larkspur, CO

Record high
97.0°F
July 10, 1976
Record low
-27.0°F
January 18, 1984
Wettest day
4.42 in
May 7, 1973

Climate change signal in Larkspur

26%

of Larkspur's all-time daily heat records were set in the last decade (95 of 366 records since 2015).

8.7%

of all-time daily cold records were set in the last decade (32 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
·
·
1900s
·
·
1960s
56
91
1970s
174
149
1980s
41
94
2000s
·
·
2010s
·
·
2020s
95
32

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 1965, the latest in 2026. Period of observation: 1899-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 68.0°F — Jan 21, 1971 -27.0°F — Jan 18, 1984 1.20 in — Jan 21, 1973
February 70.0°F — Feb 25, 2026 -27.0°F — Feb 4, 1982 1.78 in — Feb 18, 1974
March 82.9°F — Mar 22, 2026 -15.0°F — Mar 4, 1978 2.20 in — Mar 29, 1985
April 80.1°F — Apr 12, 2023 1.0°F — Apr 5, 2023 2.78 in — Apr 14, 1967
May 84.0°F — May 18, 1970 18.0°F — May 1, 1967 4.42 in — May 7, 1973
June 93.0°F — Jun 25, 1971 28.9°F — Jun 9, 1979 2.02 in — Jun 9, 1974
July 97.0°F — Jul 10, 1976 34.0°F — Jul 6, 1977 3.70 in — Jul 28, 2011
August 93.9°F — Aug 9, 1969 36.0°F — Aug 14, 1978 2.60 in — Aug 22, 1969
September 90.0°F — Sep 7, 2022 12.0°F — Sep 29, 1985 1.98 in — Sep 26, 1973
October 84.0°F — Oct 1, 1968 1.9°F — Oct 13, 1969 1.90 in — Oct 16, 1984
November 78.1°F — Nov 3, 2025 -11.0°F — Nov 26, 1976 2.20 in — Nov 1, 1972
December 69.1°F — Dec 23, 2025 -26.0°F — Dec 22, 1983 1.47 in — Dec 19, 1973

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