All-time weather records — Galesburg, IL

Record high
111.9°F
July 15, 1936
Record low
-27.9°F
February 13, 1905
Wettest day
7.70 in
September 8, 1927

Climate change signal in Galesburg

10.4%

of Galesburg's all-time daily heat records were set in the last decade (38 of 366 records since 2015).

4.1%

of all-time daily cold records were set in the last decade (15 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
16
26
1900s
33
111
1920s
·
·
1930s
29
5
1940s
31
15
1950s
49
25
1960s
31
44
1970s
24
48
1980s
38
34
1990s
21
23
2000s
35
14
2010s
37
18
2020s
22
3

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 1897, the latest in 2026. Period of observation: 1895-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 68.0°F — Jan 23, 1909 -27.0°F — Jan 16, 2009 2.50 in — Jan 2, 1897
February 73.9°F — Feb 28, 2024 -27.9°F — Feb 13, 1905 2.76 in — Feb 21, 1997
March 86.0°F — Mar 29, 1986 -14.1°F — Mar 5, 1960 4.11 in — Mar 25, 1954
April 91.0°F — Apr 25, 1986 9.0°F — Apr 2, 1899 4.16 in — Apr 18, 2013
May 96.1°F — May 28, 2018 24.1°F — May 1, 1903 3.62 in — May 16, 2009
June 102.0°F — Jun 29, 1936 36.0°F — Jun 12, 1903 4.11 in — Jun 14, 1970
July 111.9°F — Jul 15, 1936 42.1°F — Jul 1, 1899 6.13 in — Jul 24, 1993
August 102.0°F — Aug 18, 1936 41.0°F — Aug 24, 1908 5.40 in — Aug 16, 1898
September 100.0°F — Sep 5, 1899 19.0°F — Sep 30, 1899 7.70 in — Sep 8, 1927
October 93.9°F — Oct 3, 2006 17.1°F — Oct 17, 2001 4.17 in — Oct 3, 1941
November 79.0°F — Nov 1, 1950 -6.0°F — Nov 27, 1898 2.61 in — Nov 19, 1954
December 72.0°F — Dec 16, 2021 -22.0°F — Dec 21, 1963 3.28 in — Dec 9, 2003

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