All-time weather records — Granby, CO

Record high
89.1°F
July 1, 2002
Record low
-45.9°F
January 10, 1962
Wettest day
6.05 in
February 15, 1984

Climate change signal in Granby

15.3%

of Granby's all-time daily heat records were set in the last decade (56 of 366 records since 2015).

3.6%

of all-time daily cold records were set in the last decade (13 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 #
1940s
7
20
1950s
38
87
1960s
22
37
1970s
26
64
1980s
30
45
1990s
44
42
2000s
121
35
2010s
40
30
2020s
38
6

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 1948, the latest in 2026. Period of observation: 1948-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 48.9°F — Jan 21, 1950 -45.9°F — Jan 10, 1962 0.78 in — Jan 29, 1951
February 53.1°F — Feb 1, 1954 -42.0°F — Feb 1, 1985 6.05 in — Feb 15, 1984
March 66.9°F — Mar 21, 2026 -29.9°F — Mar 3, 1965 1.40 in — Mar 19, 2003
April 73.0°F — Apr 30, 1992 -17.0°F — Apr 2, 1975 1.32 in — Apr 23, 2000
May 86.0°F — May 30, 2002 -0.9°F — May 2, 2013 1.43 in — May 7, 1969
June 88.0°F — Jun 23, 1954 21.0°F — Jun 1, 1990 1.37 in — Jun 8, 2023
July 89.1°F — Jul 1, 2002 27.0°F — Jul 3, 1982 1.53 in — Jul 31, 1997
August 88.0°F — Aug 10, 2003 25.0°F — Aug 27, 1992 1.25 in — Aug 19, 2004
September 82.9°F — Sep 1, 1988 14.0°F — Sep 30, 1959 1.53 in — Sep 12, 2008
October 73.9°F — Oct 1, 1992 -8.0°F — Oct 31, 2019 1.45 in — Oct 3, 1969
November 64.9°F — Nov 10, 1971 -22.0°F — Nov 28, 1976 1.12 in — Nov 9, 1985
December 57.9°F — Dec 24, 1971 -36.9°F — Dec 29, 1983 1.33 in — Dec 30, 1951

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