All-time weather records — Olean, MO

Record high
115.0°F
July 14, 1954
Record low
-27.9°F
January 10, 1982
Wettest day
11.19 in
October 16, 1925

Climate change signal in Olean

5.7%

of Olean's all-time daily heat records were set in the last decade (21 of 366 records since 2015).

3.6%

of all-time daily cold records were set in the last decade (13 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
8
24
1900s
16
28
1910s
33
52
1920s
46
54
1930s
78
28
1940s
22
26
1950s
46
24
1960s
15
16
1970s
12
15
1980s
26
40
1990s
17
28
2000s
14
14
2010s
16
7
2020s
17
10

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 1897, the latest in 2026. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 79.0°F — Jan 24, 1950 -27.9°F — Jan 10, 1982 3.50 in — Jan 5, 2005
February 82.0°F — Mar 1, 1972 -27.9°F — Feb 12, 1899 2.48 in — Feb 23, 1985
March 96.1°F — Mar 17, 1921 -7.1°F — Mar 4, 1978 3.50 in — Mar 4, 1963
April 95.0°F — Apr 21, 1987 6.1°F — Apr 24, 1998 6.01 in — Apr 30, 2017
May 102.0°F — May 30, 1934 21.9°F — May 12, 2001 4.80 in — May 18, 1995
June 106.0°F — Jun 28, 1936 32.0°F — Jun 8, 1998 5.50 in — Jun 4, 1998
July 115.0°F — Jul 14, 1954 46.9°F — Jul 9, 1898 6.50 in — Jul 26, 1998
August 111.9°F — Aug 15, 1936 37.9°F — Aug 31, 1915 4.87 in — Aug 28, 1974
September 108.0°F — Sep 4, 1913 30.0°F — Sep 29, 1916 5.81 in — Sep 30, 1925
October 96.1°F — Oct 7, 1939 17.1°F — Oct 30, 1917 11.19 in — Oct 16, 1925
November 86.0°F — Nov 1, 1937 3.0°F — Nov 17, 1959 5.94 in — Nov 18, 2015
December 77.0°F — Dec 9, 1991 -25.1°F — Dec 23, 1989 6.30 in — Dec 14, 2000

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