All-time weather records — Vandalia, IL

Record high
111.0°F
July 21, 1901
Record low
-22.0°F
January 27, 1904
Wettest day
5.24 in
May 31, 1944

Climate change signal in Vandalia

0%

of Vandalia's all-time daily heat records were set in the last decade (0 of 366 records since 2015).

0%

of all-time daily cold records were set in the last decade (0 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
7
4
1900s
84
91
1930s
·
·
1940s
·
·
1950s
·
·
1970s
38
87
1980s
73
81
1990s
58
69
2000s
58
31
2010s
48
3
2020s
·
·

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 1899, the latest in 2012. Period of observation: 1899-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 72.0°F — Jan 20, 1906 -22.0°F — Jan 27, 1904 4.36 in — Jan 4, 1950
February 77.0°F — Feb 25, 2000 -18.9°F — Feb 13, 1905 3.10 in — Feb 11, 2009
March 84.0°F — Mar 29, 1985 -9.0°F — Mar 5, 1978 2.83 in — Mar 19, 2008
April 89.1°F — Apr 29, 1987 19.9°F — Apr 19, 1983 3.02 in — Apr 5, 2025
May 93.9°F — May 29, 2012 28.0°F — May 1, 1903 5.24 in — May 31, 1944
June 104.0°F — Jun 29, 2012 39.0°F — Jun 13, 1903 4.55 in — Jun 28, 2010
July 111.0°F — Jul 21, 1901 48.0°F — Jul 8, 1901 2.64 in — Jul 1, 2025
August 106.0°F — Aug 2, 1901 41.0°F — Aug 23, 1904 3.78 in — Aug 4, 1984
September 98.1°F — Sep 2, 2011 19.9°F — Sep 30, 1899 3.74 in — Sep 1, 2012
October 98.1°F — Oct 3, 1904 21.9°F — Oct 14, 1979 4.09 in — Oct 19, 2025
November 81.0°F — Nov 5, 2003 5.0°F — Nov 26, 1977 3.86 in — Nov 1, 1946
December 72.0°F — Dec 3, 1982 -17.0°F — Dec 22, 1989 2.45 in — Dec 30, 1936

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