All-time weather records — Waterville, IA

Record high
100.9°F
July 7, 1980
Record low
-43.1°F
January 30, 1951
Wettest day
6.60 in
June 26, 2021

Climate change signal in Waterville

11.7%

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

4.9%

of all-time daily cold records were set in the last decade (18 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 #
1930s
11
·
1940s
62
31
1950s
37
78
1960s
34
72
1970s
25
75
1980s
58
44
1990s
26
28
2000s
41
15
2010s
43
17
2020s
29
6

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 1939, the latest in 2026. Period of observation: 1936-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 57.0°F — Jan 25, 2002 -43.1°F — Jan 30, 1951 1.70 in — Jan 9, 2026
February 70.0°F — Feb 27, 2024 -34.1°F — Feb 3, 1996 1.38 in — Feb 27, 1998
March 82.0°F — Mar 29, 1986 -34.1°F — Mar 1, 1962 2.50 in — Mar 31, 1998
April 93.0°F — Apr 22, 1980 10.9°F — Apr 8, 1972 2.37 in — Apr 30, 1984
May 93.9°F — May 13, 2022 27.0°F — May 6, 1989 5.89 in — May 22, 2004
June 100.0°F — Jun 21, 1988 36.0°F — Jun 13, 1995 6.60 in — Jun 26, 2021
July 100.9°F — Jul 7, 1980 46.0°F — Jul 30, 1971 5.09 in — Jul 16, 1950
August 100.9°F — Aug 17, 1988 44.1°F — Aug 20, 1950 6.42 in — Aug 6, 1951
September 100.0°F — Sep 8, 1939 28.9°F — Sep 30, 1984 4.40 in — Sep 4, 2018
October 91.9°F — Oct 3, 1997 18.0°F — Oct 19, 1972 2.63 in — Oct 2, 2019
November 75.0°F — Nov 1, 1944 -8.0°F — Nov 26, 1977 2.75 in — Nov 4, 2003
December 66.0°F — Dec 3, 2012 -29.0°F — Dec 25, 2000 1.95 in — Dec 14, 2015

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