All-time weather records — Duluth, MN

Record high
97.0°F
July 10, 1980
Record low
-36.9°F
January 10, 1991
Wettest day
4.35 in
September 7, 1964

Climate change signal in Duluth

0%

of Duluth's all-time daily heat records were set in the last decade (0 of 366 records since 2015).

0%

of all-time daily cold records were set in the last decade (0 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 #
1960s
83
57
1970s
55
89
1980s
76
41
1990s
86
72
2000s
66
107

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 1960, the latest in 2004. Period of observation: 1933-2004.

Records by month

Month Hottest day Coldest day Wettest day
January 51.1°F — Jan 9, 2003 -36.9°F — Jan 10, 1991 1.35 in — Jan 10, 1975
February 54.0°F — Feb 9, 1991 -36.9°F — Feb 3, 1996 0.94 in — Feb 25, 1977
March 66.9°F — Mar 7, 1987 -27.9°F — Mar 1, 1962 1.74 in — Mar 28, 1977
April 81.0°F — Apr 29, 1965 -14.1°F — Apr 2, 1975 1.96 in — Apr 23, 1968
May 90.0°F — May 30, 1986 21.0°F — May 3, 1967 2.06 in — May 24, 1989
June 91.0°F — Jun 28, 1961 32.0°F — Jun 4, 2002 2.50 in — Jun 10, 1986
July 97.0°F — Jul 10, 1980 37.0°F — Jul 8, 2004 2.08 in — Jul 14, 1968
August 97.0°F — Aug 8, 2001 30.9°F — Aug 16, 2004 2.73 in — Aug 25, 1990
September 91.9°F — Sep 7, 1976 28.9°F — Sep 23, 1974 4.35 in — Sep 7, 1964
October 84.9°F — Oct 2, 1992 14.0°F — Oct 27, 1976 2.50 in — Oct 6, 1982
November 66.9°F — Nov 3, 1978 -9.9°F — Nov 29, 1976 1.65 in — Nov 9, 1978
December 57.0°F — Dec 3, 1962 -27.0°F — Dec 19, 1983 1.47 in — Dec 11, 1983

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