All-time weather records — Johnson, MN

Record high
109.0°F
July 22, 1934
Record low
-38.9°F
February 16, 1936
Wettest day
11.45 in
April 21, 1951

Climate change signal in Johnson

15.6%

of Johnson's all-time daily heat records were set in the last decade (57 of 366 records since 2015).

2.7%

of all-time daily cold records were set in the last decade (10 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 #
1910s
1
26
1920s
22
69
1930s
100
80
1940s
30
34
1950s
21
28
1960s
22
33
1970s
23
35
1980s
38
24
1990s
25
17
2000s
18
5
2010s
19
10
2020s
47
5

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 1917, the latest in 2026. Period of observation: 1917-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 63.0°F — Jan 24, 1981 -36.9°F — Jan 24, 1936 2.30 in — Jan 4, 1997
February 61.0°F — Feb 26, 2024 -38.9°F — Feb 16, 1936 1.46 in — Feb 23, 1977
March 80.1°F — Mar 23, 1928 -32.1°F — Mar 11, 1948 1.90 in — Mar 12, 1977
April 97.0°F — Apr 21, 1980 -4.0°F — Apr 1, 1924 11.45 in — Apr 21, 1951
May 108.0°F — May 31, 1934 16.0°F — May 3, 1926 2.84 in — May 16, 1969
June 106.0°F — Jun 24, 1988 28.9°F — Jun 2, 1946 4.91 in — Jun 21, 2013
July 109.0°F — Jul 22, 1934 39.0°F — Jul 7, 1934 4.78 in — Jul 8, 1949
August 105.1°F — Aug 4, 1959 30.9°F — Aug 30, 1931 5.78 in — Aug 18, 1935
September 106.0°F — Sep 10, 1931 17.1°F — Sep 26, 1939 3.40 in — Sep 23, 2023
October 93.9°F — Oct 1, 2023 3.0°F — Oct 26, 1919 3.79 in — Oct 10, 2021
November 82.9°F — Nov 1, 1938 -20.0°F — Nov 20, 1921 1.81 in — Nov 19, 2024
December 69.1°F — Dec 6, 1939 -31.0°F — Dec 28, 1993 1.49 in — Dec 24, 2023

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