All-time weather records — Ankeny, IA

Record high
106.0°F
August 16, 1983
Record low
-54.0°F
November 16, 1999
Wettest day
6.00 in
March 2, 2002

Climate change signal in Ankeny

7.4%

of Ankeny's all-time daily heat records were set in the last decade (27 of 366 records since 2015).

3.6%

of all-time daily cold records were set in the last decade (13 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
58
1960s
44
56
1970s
35
66
1980s
62
41
1990s
33
93
2000s
64
29
2010s
72
18
2020s
8
5

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 1950, the latest in 2021. Period of observation: 1950-2021.

Records by month

Month Hottest day Coldest day Wettest day
January 66.9°F — Jan 6, 2012 -27.9°F — Jan 16, 2009 2.25 in — Jan 1, 1995
February 73.9°F — Feb 18, 2017 -34.1°F — Feb 3, 1996 1.59 in — Feb 21, 1976
March 90.0°F — Mar 29, 1986 -23.1°F — Mar 1, 1962 6.00 in — Mar 2, 2002
April 93.0°F — Apr 22, 1980 -16.1°F — Apr 18, 1999 4.50 in — Apr 30, 1986
May 99.0°F — May 11, 2011 -31.0°F — May 4, 1999 2.65 in — May 11, 1970
June 102.0°F — Jun 6, 1977 39.9°F — Jun 1, 1982 5.25 in — Jun 20, 1954
July 105.1°F — Jul 20, 2011 23.0°F — Jul 14, 2002 3.93 in — Jul 28, 2008
August 106.0°F — Aug 16, 1983 17.1°F — Aug 1, 2002 4.59 in — Aug 28, 1977
September 100.0°F — Sep 10, 2013 21.9°F — Sep 21, 1999 3.92 in — Sep 7, 2007
October 93.9°F — Oct 5, 1963 -29.0°F — Oct 31, 1999 2.91 in — Oct 7, 2017
November 82.9°F — Nov 1, 1968 -54.0°F — Nov 16, 1999 2.05 in — Nov 4, 2003
December 70.0°F — Dec 28, 1984 -25.1°F — Dec 23, 1989 2.48 in — Dec 14, 2015

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