All-time weather records — Osage, IA

Record high
107.1°F
July 14, 1936
Record low
-35.0°F
January 12, 1912
Wettest day
6.37 in
August 10, 1980

Climate change signal in Osage

11.7%

of Osage's all-time daily heat records were set in the last decade (43 of 366 records since 2015).

5.2%

of all-time daily cold records were set in the last decade (19 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
2
12
1900s
10
53
1910s
41
31
1920s
14
33
1930s
74
32
1940s
34
38
1950s
18
41
1960s
14
27
1970s
12
21
1980s
27
24
1990s
30
19
2000s
29
14
2010s
30
11
2020s
31
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 1894, the latest in 2026. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 61.0°F — Jan 27, 2002 -35.0°F — Jan 12, 1912 1.62 in — Jan 30, 1947
February 73.0°F — Feb 27, 2024 -35.0°F — Feb 1, 1996 1.34 in — Feb 25, 2007
March 84.0°F — Mar 23, 1910 -27.0°F — Mar 1, 1962 2.07 in — Mar 6, 1959
April 91.9°F — Apr 22, 1980 6.1°F — Apr 6, 1982 3.05 in — Apr 28, 1975
May 105.1°F — May 31, 1934 21.0°F — May 9, 1945 4.85 in — May 27, 1938
June 105.1°F — Jun 27, 1934 34.0°F — Jun 4, 1945 6.31 in — Jun 13, 1914
July 107.1°F — Jul 14, 1936 37.0°F — Jul 4, 1908 5.75 in — Jul 18, 1999
August 102.9°F — Aug 3, 1930 37.0°F — Aug 13, 1907 6.37 in — Aug 10, 1980
September 100.9°F — Sep 5, 1913 19.9°F — Sep 30, 1899 5.17 in — Sep 20, 1983
October 93.0°F — Oct 4, 1997 -4.0°F — Oct 30, 1925 2.67 in — Oct 9, 1970
November 79.0°F — Nov 28, 1914 -15.0°F — Nov 26, 1977 4.00 in — Nov 27, 1995
December 68.0°F — Dec 6, 2001 -29.9°F — Dec 27, 1950 1.78 in — Dec 28, 1982

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