All-time weather records — Chillicothe, IA

Record high
106.0°F
July 23, 2012
Record low
-27.0°F
February 3, 1996
Wettest day
5.32 in
September 14, 1992

Climate change signal in Chillicothe

16.7%

of Chillicothe's all-time daily heat records were set in the last decade (61 of 366 records since 2015).

16.7%

of all-time daily cold records were set in the last decade (61 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
9
5
1950s
48
52
1960s
48
57
1970s
25
38
1980s
72
45
1990s
40
26
2000s
35
54
2010s
56
56
2020s
33
33

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 1948, the latest in 2026. Period of observation: 1948-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 71.1°F — Jan 31, 1989 -23.1°F — Jan 10, 1982 1.54 in — Jan 27, 1949
February 79.0°F — Feb 22, 2017 -27.0°F — Feb 3, 1996 1.93 in — Feb 24, 2007
March 91.0°F — Mar 21, 2026 -20.0°F — Mar 1, 1962 2.79 in — Mar 4, 1976
April 91.0°F — Apr 30, 1965 9.0°F — Apr 6, 1982 4.88 in — Apr 17, 2013
May 97.0°F — May 27, 2018 24.1°F — May 3, 2005 4.43 in — May 2, 1993
June 102.9°F — Jun 25, 1988 21.9°F — Jun 3, 1982 3.41 in — Jun 25, 2008
July 106.0°F — Jul 23, 2012 48.0°F — Jul 5, 1972 3.78 in — Jul 12, 1989
August 105.1°F — Aug 18, 1983 41.0°F — Aug 20, 1950 4.54 in — Aug 20, 2010
September 100.0°F — Sep 1, 1984 27.0°F — Sep 29, 1984 5.32 in — Sep 14, 1992
October 93.0°F — Oct 2, 1953 17.1°F — Oct 19, 1972 2.40 in — Oct 24, 2021
November 79.0°F — Nov 8, 1999 -9.0°F — Nov 30, 1964 2.58 in — Nov 2, 1961
December 75.0°F — Dec 15, 2021 -20.9°F — Dec 23, 1989 1.90 in — Dec 7, 1980

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