All-time weather records — Coulter, IA

Record high
109.0°F
July 21, 1901
Record low
-35.0°F
March 1, 1962
Wettest day
40.09 in
May 13, 1911

Climate change signal in Coulter

11.7%

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

4.6%

of all-time daily cold records were set in the last decade (17 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
21
38
1900s
27
26
1910s
24
20
1920s
12
28
1930s
70
34
1940s
29
26
1950s
19
52
1960s
13
50
1970s
10
25
1980s
30
15
1990s
22
22
2000s
22
11
2010s
38
11
2020s
29
8

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

Records by month

Month Hottest day Coldest day Wettest day
January 64.9°F — Jan 27, 2002 -34.1°F — Jan 12, 1912 1.40 in — Jan 3, 1971
February 77.0°F — Feb 27, 2024 -31.0°F — Feb 3, 1996 2.00 in — Feb 15, 2003
March 88.0°F — Mar 29, 1895 -35.0°F — Mar 1, 1962 1.63 in — Mar 5, 2025
April 95.0°F — Apr 22, 1980 9.0°F — Apr 4, 2018 3.50 in — Apr 25, 2008
May 107.1°F — May 31, 1934 3.9°F — May 13, 1911 40.09 in — May 13, 1911
June 106.0°F — Jun 27, 1934 35.1°F — Jun 7, 1935 5.14 in — Jun 23, 2010
July 109.0°F — Jul 21, 1901 39.9°F — Jul 9, 1895 6.47 in — Jul 17, 1968
August 105.1°F — Aug 18, 1936 36.0°F — Aug 31, 1967 3.59 in — Aug 29, 1985
September 102.0°F — Sep 5, 1913 21.9°F — Sep 28, 1942 4.90 in — Sep 20, 2018
October 96.1°F — Oct 5, 1963 -0.9°F — Oct 30, 1925 3.68 in — Oct 7, 2017
November 80.1°F — Nov 8, 1931 -14.1°F — Nov 26, 1977 4.04 in — Nov 23, 1931
December 70.0°F — Dec 16, 2021 -23.1°F — Dec 22, 1989 2.03 in — Dec 14, 2015

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