All-time weather records — Oak Grove, IL

Record high
104.0°F
June 25, 1988
Record low
-32.8°F
January 31, 2019
Wettest day
6.21 in
September 13, 1961

Climate change signal in Oak Grove

17.8%

of Oak Grove's all-time daily heat records were set in the last decade (65 of 366 records since 2015).

6.6%

of all-time daily cold records were set in the last decade (24 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
29
27
1950s
41
54
1960s
42
70
1970s
27
69
1980s
52
50
1990s
32
33
2000s
53
26
2010s
50
27
2020s
40
10

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 1944, the latest in 2026. Period of observation: 1943-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 69.1°F — Jan 31, 1989 -32.8°F — Jan 31, 2019 1.70 in — Jan 3, 1971
February 79.0°F — Feb 27, 2024 -27.9°F — Feb 3, 1996 1.78 in — Feb 27, 1948
March 88.0°F — Mar 29, 1986 -18.9°F — Mar 6, 1960 2.16 in — Mar 22, 1993
April 93.0°F — Apr 25, 1986 7.0°F — Apr 7, 1982 4.26 in — Apr 21, 1973
May 99.0°F — May 28, 2018 25.0°F — May 3, 2005 3.50 in — May 20, 2025
June 104.0°F — Jun 25, 1988 39.0°F — Jun 1, 1993 5.10 in — Jun 30, 2014
July 104.0°F — Jul 7, 2012 46.0°F — Jul 11, 1945 5.08 in — Jul 10, 1971
August 102.9°F — Aug 1, 1987 39.9°F — Aug 28, 1986 4.60 in — Aug 29, 1951
September 99.0°F — Sep 1, 1953 30.0°F — Sep 20, 1956 6.21 in — Sep 13, 1961
October 95.0°F — Oct 3, 2006 16.0°F — Oct 29, 1952 4.77 in — Oct 10, 1954
November 80.1°F — Nov 1, 2000 -9.0°F — Nov 29, 1976 2.13 in — Nov 17, 2015
December 75.0°F — Dec 15, 2021 -24.0°F — Dec 23, 1989 3.11 in — Dec 2, 1982

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