All-time weather records — Anamosa, IA

Record high
104.0°F
July 25, 1940
Record low
-36.9°F
January 17, 2009
Wettest day
6.52 in
July 3, 1999

Climate change signal in Anamosa

0%

of Anamosa's all-time daily heat records were set in the last decade (0 of 366 records since 2015).

0%

of all-time daily cold records were set in the last decade (0 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
28
6
1940s
49
43
1950s
49
58
1960s
36
66
1970s
32
76
1980s
80
58
1990s
47
31
2000s
43
28
2010s
2
·

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 1937, the latest in 2010. Period of observation: 1937-2011.

Records by month

Month Hottest day Coldest day Wettest day
January 66.0°F — Jan 31, 1989 -36.9°F — Jan 17, 2009 1.89 in — Jan 12, 1960
February 66.9°F — Feb 17, 1981 -36.9°F — Feb 3, 1996 3.35 in — Feb 8, 2001
March 87.1°F — Mar 29, 1986 -22.0°F — Mar 1, 1962 2.48 in — Mar 25, 1945
April 90.0°F — Apr 20, 1987 0.0°F — Apr 6, 1982 2.35 in — Apr 29, 1974
May 93.0°F — May 26, 1985 19.9°F — May 2, 2005 4.38 in — May 29, 1962
June 100.0°F — Jun 20, 1988 33.1°F — Jun 1, 1993 3.90 in — Jun 17, 1990
July 104.0°F — Jul 25, 1940 39.0°F — Jul 5, 1972 6.52 in — Jul 3, 1999
August 102.9°F — Aug 18, 1947 37.0°F — Aug 20, 1950 4.97 in — Aug 5, 1968
September 99.0°F — Sep 9, 1955 21.9°F — Sep 28, 1942 5.35 in — Sep 8, 1941
October 93.0°F — Oct 4, 1997 10.0°F — Oct 29, 1952 2.65 in — Oct 19, 1984
November 78.1°F — Nov 1, 2000 -14.1°F — Nov 26, 1977 3.20 in — Nov 17, 1952
December 71.1°F — Dec 4, 1998 -27.0°F — Dec 19, 1985 2.20 in — Dec 15, 1971

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