All-time weather records — Joliet, MT

Record high
106.0°F
July 13, 2002
Record low
-38.9°F
December 24, 1983
Wettest day
4.25 in
May 18, 1978

Climate change signal in Joliet

6.6%

of Joliet's all-time daily heat records were set in the last decade (24 of 366 records since 2015).

11.2%

of all-time daily cold records were set in the last decade (41 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 #
1950s
22
12
1960s
61
92
1970s
37
47
1980s
74
52
1990s
70
40
2000s
61
50
2010s
36
64
2020s
5
9

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 1956, the latest in 2020. Period of observation: 1951-2020.

Records by month

Month Hottest day Coldest day Wettest day
January 63.0°F — Jan 26, 2015 -36.9°F — Jan 12, 1997 0.95 in — Jan 26, 1975
February 73.0°F — Feb 21, 1982 -35.0°F — Feb 3, 1989 0.64 in — Feb 18, 1955
March 78.1°F — Mar 16, 1994 -32.1°F — Mar 4, 2019 1.31 in — Mar 23, 1973
April 87.1°F — Apr 20, 1980 -9.9°F — Apr 3, 2018 2.06 in — Apr 25, 1964
May 93.9°F — May 14, 2001 15.1°F — May 11, 1968 4.25 in — May 18, 1978
June 102.0°F — Jun 23, 1988 27.0°F — Jun 11, 2008 4.20 in — Jun 14, 2001
July 106.0°F — Jul 13, 2002 32.0°F — Jul 31, 1968 1.45 in — Jul 6, 1994
August 104.0°F — Aug 5, 1961 28.9°F — Aug 25, 1992 2.00 in — Aug 15, 1987
September 100.9°F — Sep 6, 2020 18.0°F — Sep 28, 1984 2.79 in — Sep 18, 1978
October 91.0°F — Oct 2, 2011 -9.9°F — Oct 30, 1991 2.60 in — Oct 31, 1974
November 75.0°F — Nov 5, 1969 -27.9°F — Nov 13, 1959 1.27 in — Nov 1, 1957
December 69.1°F — Dec 15, 1980 -38.9°F — Dec 24, 1983 0.70 in — Dec 4, 2013

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