All-time weather records — Hanlontown, IA

Record high
104.0°F
July 7, 1980
Record low
-32.1°F
February 2, 1996
Wettest day
6.33 in
August 22, 1954

Climate change signal in Hanlontown

18.6%

of Hanlontown's all-time daily heat records were set in the last decade (68 of 366 records since 2015).

9.8%

of all-time daily cold records were set in the last decade (36 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 #
1940s
13
7
1950s
30
50
1960s
44
67
1970s
39
58
1980s
61
49
1990s
38
37
2000s
39
41
2010s
51
35
2020s
51
22

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 1948, the latest in 2026. Period of observation: 1948-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 62.1°F — Jan 26, 2002 -31.0°F — Jan 16, 2009 1.12 in — Jan 22, 1982
February 73.0°F — Feb 26, 2024 -32.1°F — Feb 2, 1996 1.62 in — Feb 27, 1948
March 84.0°F — Mar 28, 2025 -27.9°F — Mar 1, 1962 2.08 in — Mar 30, 2006
April 93.0°F — Apr 18, 1985 6.1°F — Apr 6, 1982 2.74 in — Apr 19, 2005
May 99.0°F — May 14, 2013 21.9°F — May 3, 2005 4.59 in — May 21, 2004
June 102.9°F — Jun 8, 1985 36.0°F — Jun 1, 1993 5.36 in — Jun 18, 1954
July 104.0°F — Jul 7, 1980 42.1°F — Jul 5, 1967 4.13 in — Jul 24, 2015
August 100.9°F — Aug 13, 1965 35.1°F — Aug 20, 1950 6.33 in — Aug 22, 1954
September 99.0°F — Sep 9, 2013 24.1°F — Sep 29, 1949 5.20 in — Sep 12, 1978
October 95.0°F — Oct 3, 1997 12.0°F — Oct 19, 1972 2.75 in — Oct 11, 1986
November 79.0°F — Nov 8, 2006 -16.1°F — Nov 26, 1977 2.35 in — Nov 9, 1975
December 69.1°F — Dec 15, 2021 -26.0°F — Dec 18, 1983 1.60 in — Dec 27, 1982

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