All-time weather records — Mound City, IL

Record high
108.0°F
July 7, 2012
Record low
-16.1°F
January 12, 1918
Wettest day
9.00 in
August 6, 2010

Climate change signal in Mound City

2.7%

of Mound City's all-time daily heat records were set in the last decade (10 of 366 records since 2015).

4.6%

of all-time daily cold records were set in the last decade (17 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 #
1900s
5
2
1910s
41
43
1920s
31
44
1930s
44
22
1940s
19
23
1950s
67
25
1960s
28
22
1970s
15
12
1980s
45
53
1990s
13
32
2000s
22
53
2010s
26
18
2020s
10
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 1908, the latest in 2026. Period of observation: 1908-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 75.0°F — Jan 25, 1950 -16.1°F — Jan 12, 1918 5.80 in — Jan 24, 1949
February 78.1°F — Feb 25, 1918 -5.1°F — Feb 2, 1951 4.75 in — Feb 12, 1950
March 88.0°F — Mar 24, 1929 6.1°F — Mar 5, 1960 5.47 in — Mar 1, 1997
April 93.9°F — Apr 16, 2010 25.0°F — Apr 8, 2007 3.87 in — Apr 4, 2008
May 98.1°F — May 26, 1953 35.1°F — May 3, 2003 6.15 in — May 14, 1967
June 106.0°F — Jun 30, 2012 45.0°F — Jun 4, 1988 5.78 in — Jun 14, 1961
July 108.0°F — Jul 7, 2012 54.0°F — Jul 23, 1947 4.24 in — Jul 26, 2001
August 106.0°F — Aug 9, 1930 50.0°F — Aug 29, 1986 9.00 in — Aug 6, 2010
September 104.0°F — Sep 5, 1925 39.0°F — Sep 24, 1989 6.14 in — Sep 11, 1965
October 93.0°F — Oct 5, 1938 25.0°F — Oct 31, 1993 5.66 in — Oct 18, 2007
November 82.0°F — Nov 4, 2003 5.0°F — Nov 25, 1950 4.94 in — Nov 21, 1934
December 79.0°F — Dec 2, 1982 -9.0°F — Dec 22, 1989 4.66 in — Dec 3, 1978

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