All-time weather records — Ashton, IA

Record high
108.0°F
July 17, 1936
Record low
-40.0°F
January 12, 1912
Wettest day
6.03 in
September 22, 1895

Climate change signal in Ashton

10.7%

of Ashton's all-time daily heat records were set in the last decade (39 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 #
1890s
27
46
1900s
32
34
1910s
35
55
1930s
34
18
1940s
30
42
1950s
30
41
1960s
30
25
1970s
22
22
1980s
30
21
1990s
15
24
2000s
25
8
2010s
29
21
2020s
27
9

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 64.0°F — Jan 25, 1944 -40.0°F — Jan 12, 1912 1.76 in — Jan 4, 2023
February 68.0°F — Feb 26, 1896 -40.0°F — Feb 9, 1899 2.50 in — Feb 18, 1962
March 86.0°F — Mar 22, 2026 -29.9°F — Mar 11, 1948 2.35 in — Mar 25, 2024
April 93.9°F — Apr 29, 1910 0.0°F — Apr 3, 1936 3.10 in — Apr 7, 2006
May 100.0°F — May 15, 2013 15.1°F — May 3, 1967 3.34 in — May 31, 1959
June 102.0°F — Jun 18, 1953 30.0°F — Jun 4, 1945 5.11 in — Jun 22, 2024
July 108.0°F — Jul 17, 1936 37.0°F — Jul 9, 1895 4.40 in — Jul 22, 2010
August 106.0°F — Aug 24, 1936 30.0°F — Aug 20, 1950 5.24 in — Aug 22, 1975
September 102.0°F — Sep 6, 1913 15.1°F — Sep 29, 1899 6.03 in — Sep 22, 1895
October 93.0°F — Oct 15, 1958 3.0°F — Oct 30, 1917 2.53 in — Oct 23, 2008
November 77.0°F — Nov 3, 1978 -20.0°F — Nov 14, 1959 2.07 in — Nov 16, 1918
December 66.0°F — Dec 6, 1939 -32.1°F — Dec 29, 1917 1.53 in — Dec 28, 1982

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