All-time weather records — Chain of Rocks, MO

Record high
107.1°F
August 30, 1984
Record low
-20.0°F
January 21, 1985
Wettest day
10.88 in
July 26, 2022

Climate change signal in Chain of Rocks

2.7%

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

3.8%

of all-time daily cold records were set in the last decade (14 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 #
1980s
170
168
1990s
56
52
2000s
47
58
2010s
93
88
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 1980, the latest in 2016. Period of observation: 1980-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 73.0°F — Jan 22, 1986 -20.0°F — Jan 21, 1985 2.50 in — Jan 5, 2005
February 78.1°F — Feb 28, 1981 -17.0°F — Feb 6, 1982 3.35 in — Feb 2, 1986
March 88.0°F — Mar 29, 1985 1.0°F — Mar 3, 2014 2.35 in — Mar 19, 2008
April 93.0°F — Apr 26, 1986 21.9°F — Apr 6, 1982 3.35 in — Apr 5, 2025
May 93.0°F — May 27, 2012 34.0°F — May 3, 2005 4.02 in — May 21, 2013
June 105.1°F — Jun 29, 2012 45.0°F — Jun 5, 1993 4.61 in — Jun 24, 2000
July 106.0°F — Jul 8, 2012 48.0°F — Jul 30, 1981 10.88 in — Jul 26, 2022
August 107.1°F — Aug 30, 1984 45.0°F — Aug 29, 1986 3.97 in — Aug 9, 2020
September 102.0°F — Sep 2, 1984 35.1°F — Sep 24, 1983 3.13 in — Sep 20, 2002
October 93.0°F — Oct 9, 1980 21.9°F — Oct 29, 1980 3.29 in — Oct 4, 1986
November 84.0°F — Nov 12, 1989 3.9°F — Nov 8, 1991 4.45 in — Nov 5, 2024
December 75.0°F — Dec 4, 2012 -18.0°F — Dec 22, 1989 6.59 in — Dec 27, 2015

Click a month to see every daily record for that month in Chain of Rocks.