All-time weather records — Marietta, MN

Record high
109.9°F
July 31, 1988
Record low
-36.0°F
February 9, 1994
Wettest day
4.63 in
August 11, 2016

Climate change signal in Marietta

12.8%

of Marietta's all-time daily heat records were set in the last decade (47 of 366 records since 2015).

7.9%

of all-time daily cold records were set in the last decade (29 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
43
51
1950s
29
41
1960s
45
64
1970s
33
74
1980s
76
28
1990s
44
28
2000s
30
36
2010s
32
27
2020s
34
17

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 1940, the latest in 2026. Period of observation: 1940-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.9°F — Jan 24, 1981 -35.0°F — Jan 21, 1970 1.80 in — Jan 4, 1997
February 66.0°F — Feb 8, 1991 -36.0°F — Feb 9, 1994 2.05 in — Feb 23, 1977
March 84.0°F — Mar 19, 2012 -23.1°F — Mar 11, 1948 3.30 in — Mar 12, 1977
April 96.1°F — Apr 25, 1962 0.0°F — Apr 1, 1975 2.87 in — Apr 5, 1997
May 102.0°F — May 28, 2018 19.9°F — May 2, 1967 3.28 in — May 23, 1946
June 105.1°F — Jun 24, 1988 32.0°F — Jun 2, 1964 4.47 in — Jun 17, 1992
July 109.9°F — Jul 31, 1988 39.9°F — Jul 4, 1967 3.71 in — Jul 29, 1989
August 109.9°F — Aug 1, 1988 34.0°F — Aug 21, 2004 4.63 in — Aug 11, 2016
September 100.0°F — Sep 2, 1983 17.1°F — Sep 22, 1974 3.35 in — Sep 19, 1957
October 96.1°F — Oct 5, 1963 3.9°F — Oct 27, 2020 3.17 in — Oct 14, 1984
November 81.0°F — Nov 5, 2020 -18.0°F — Nov 30, 1964 1.94 in — Nov 19, 2024
December 63.0°F — Dec 1, 1998 -35.0°F — Dec 31, 1973 1.66 in — Dec 28, 1959

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