All-time weather records — Zwingle, IA

Record high
100.9°F
July 25, 2012
Record low
-30.8°F
January 31, 2019
Wettest day
8.85 in
September 14, 1967

Climate change signal in Zwingle

19.4%

of Zwingle's all-time daily heat records were set in the last decade (71 of 366 records since 2015).

10.4%

of all-time daily cold records were set in the last decade (38 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 #
1950s
48
57
1960s
47
64
1970s
26
70
1980s
63
49
1990s
38
35
2000s
41
39
2010s
54
35
2020s
49
17

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 1951, the latest in 2026. Period of observation: 1951-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 60.1°F — Jan 27, 2002 -30.8°F — Jan 31, 2019 3.04 in — Jan 12, 1960
February 72.0°F — Feb 26, 2024 -27.0°F — Feb 2, 1996 1.34 in — Feb 22, 1981
March 84.9°F — Mar 29, 1986 -20.0°F — Mar 1, 1962 2.54 in — Mar 30, 1998
April 93.0°F — Apr 22, 1980 10.9°F — Apr 11, 1973 2.77 in — Apr 13, 2014
May 95.0°F — May 27, 2018 21.0°F — May 3, 2005 4.37 in — May 6, 1960
June 100.0°F — Jun 20, 1988 36.0°F — Jun 11, 1972 3.84 in — Jun 13, 2000
July 100.9°F — Jul 25, 2012 44.1°F — Jul 7, 1984 7.47 in — Jul 27, 2011
August 100.0°F — Aug 1, 1988 39.9°F — Aug 28, 1986 5.99 in — Aug 21, 2002
September 97.0°F — Sep 9, 1955 28.0°F — Sep 20, 1956 8.85 in — Sep 14, 1967
October 90.0°F — Oct 3, 1997 12.9°F — Oct 29, 1952 2.58 in — Oct 23, 1959
November 75.0°F — Nov 1, 2000 -17.0°F — Nov 26, 1977 4.79 in — Nov 2, 1961
December 69.1°F — Dec 15, 2021 -25.1°F — Dec 24, 1983 2.08 in — Dec 13, 2015

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