All-time weather records — Blanchester, OH

Record high
100.9°F
July 7, 2012
Record low
-14.1°F
January 31, 2026
Wettest day
4.24 in
August 14, 1968

Climate change signal in Blanchester

29.5%

of Blanchester's all-time daily heat records were set in the last decade (108 of 366 records since 2015).

19.4%

of all-time daily cold records were set in the last decade (71 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
12
8
1950s
56
70
1960s
26
52
1970s
·
·
1990s
28
28
2000s
79
97
2010s
92
75
2020s
73
36

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 1949, the latest in 2026. Period of observation: 1949-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 68.0°F — Jan 22, 1999 -14.1°F — Jan 31, 2026 3.18 in — Jan 3, 2000
February 75.9°F — Feb 20, 2018 -13.9°F — Feb 24, 2015 2.35 in — Feb 17, 2022
March 84.9°F — Mar 21, 2012 -4.0°F — Mar 13, 1960 2.64 in — Mar 18, 2008
April 84.9°F — Apr 23, 1960 21.0°F — Apr 1, 1954 2.50 in — Apr 16, 1998
May 91.9°F — May 28, 2012 27.0°F — May 10, 1966 3.21 in — May 24, 1968
June 100.0°F — Jun 28, 2012 0.0°F — Jun 4, 2000 3.33 in — Jun 23, 2017
July 100.9°F — Jul 7, 2012 48.0°F — Jul 2, 2007 3.84 in — Jul 20, 1954
August 98.1°F — Aug 30, 2024 41.0°F — Aug 29, 1965 4.24 in — Aug 14, 1968
September 98.1°F — Sep 5, 1954 34.0°F — Sep 24, 2012 4.02 in — Sep 12, 2006
October 91.9°F — Oct 2, 2019 21.0°F — Oct 27, 1962 2.87 in — Oct 23, 2007
November 79.0°F — Nov 2, 2016 -4.0°F — Nov 30, 1958 2.22 in — Nov 5, 2017
December 71.1°F — Dec 6, 1998 -9.0°F — Dec 25, 2004 2.26 in — Dec 5, 2011

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