All-time weather records — St. Olaf, IA

Record high
111.0°F
July 24, 1901
Record low
-47.0°F
February 3, 1996
Wettest day
6.67 in
July 26, 1940

Climate change signal in St. Olaf

9.8%

of St. Olaf's all-time daily heat records were set in the last decade (36 of 366 records since 2015).

5.7%

of all-time daily cold records were set in the last decade (21 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 #
1890s
51
32
1900s
45
17
1910s
35
36
1920s
2
1
1930s
20
6
1940s
26
31
1950s
24
41
1960s
17
26
1970s
11
59
1980s
36
38
1990s
22
22
2000s
27
22
2010s
26
27
2020s
24
8

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 1893, the latest in 2026. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 64.0°F — Jan 1, 1897 -41.1°F — Jan 31, 2019 1.55 in — Jan 12, 1960
February 73.9°F — Feb 27, 2024 -47.0°F — Feb 3, 1996 1.63 in — Feb 24, 1975
March 88.0°F — Mar 29, 1895 -31.0°F — Mar 1, 1962 3.23 in — Mar 31, 1998
April 91.9°F — Apr 22, 1980 -0.9°F — Apr 4, 1975 3.60 in — Apr 18, 1909
May 95.0°F — May 28, 2018 19.0°F — May 3, 2005 4.50 in — May 17, 1999
June 102.9°F — Jun 21, 1988 30.9°F — Jun 1, 1897 4.48 in — Jun 22, 2013
July 111.0°F — Jul 24, 1901 35.1°F — Jul 7, 1984 6.67 in — Jul 26, 1940
August 108.0°F — Aug 16, 1913 30.0°F — Aug 30, 1893 4.36 in — Aug 2, 1981
September 102.0°F — Sep 9, 1955 0.0°F — Sep 2, 2002 3.52 in — Sep 5, 2012
October 93.9°F — Oct 6, 1963 0.0°F — Oct 1, 2002 4.92 in — Oct 23, 2020
November 79.0°F — Nov 8, 1999 -22.0°F — Nov 26, 1977 3.50 in — Nov 4, 2003
December 70.0°F — Dec 16, 2021 -34.1°F — Dec 25, 2000 2.40 in — Dec 14, 2015

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