All-time weather records — Optima, OK

Record high
111.9°F
June 9, 1981
Record low
-22.0°F
January 4, 1959
Wettest day
5.54 in
June 18, 2024

Climate change signal in Optima

9%

of Optima's all-time daily heat records were set in the last decade (33 of 366 records since 2015).

4.1%

of all-time daily cold records were set in the last decade (15 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 #
1900s
20
22
1910s
50
85
1920s
13
24
1930s
28
21
1940s
24
50
1950s
50
37
1960s
31
22
1970s
33
31
1980s
24
28
1990s
29
18
2000s
21
7
2010s
11
9
2020s
32
12

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 1907, the latest in 2026. Period of observation: 1906-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 82.9°F — Jan 31, 1911 -22.0°F — Jan 4, 1959 1.66 in — Jan 28, 2020
February 90.0°F — Feb 18, 1907 -16.1°F — Feb 6, 1982 2.19 in — Feb 26, 1912
March 102.0°F — Mar 19, 1907 -18.0°F — Mar 7, 1920 2.47 in — Mar 13, 2021
April 100.9°F — Apr 23, 1989 7.0°F — Apr 2, 1936 3.25 in — Apr 29, 1985
May 105.1°F — May 17, 1996 19.0°F — May 1, 1909 4.30 in — May 11, 1972
June 111.9°F — Jun 9, 1981 35.1°F — Jun 2, 1917 5.54 in — Jun 18, 2024
July 111.0°F — Jul 10, 2009 48.0°F — Jul 5, 1924 3.85 in — Jul 14, 1973
August 109.9°F — Aug 13, 1936 39.0°F — Aug 30, 1915 5.00 in — Aug 24, 1972
September 108.0°F — Sep 4, 1945 28.9°F — Sep 21, 1983 3.49 in — Sep 2, 1916
October 98.1°F — Oct 3, 1954 9.0°F — Oct 31, 2019 3.70 in — Oct 5, 1946
November 91.0°F — Nov 8, 1980 -6.0°F — Nov 28, 1976 2.12 in — Nov 8, 2024
December 84.9°F — Dec 24, 1955 -15.0°F — Dec 28, 1915 3.32 in — Dec 29, 2006

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