All-time weather records — Northboro, IA

Record high
113.0°F
August 4, 1918
Record low
-29.0°F
February 5, 1936
Wettest day
5.89 in
September 8, 1989

Climate change signal in Northboro

10.7%

of Northboro's all-time daily heat records were set in the last decade (39 of 366 records since 2015).

8.2%

of all-time daily cold records were set in the last decade (30 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 #
1910s
10
4
1930s
69
33
1940s
29
51
1950s
40
36
1960s
45
49
1970s
16
46
1980s
31
60
1990s
30
29
2000s
38
16
2010s
38
24
2020s
20
18

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 1918, the latest in 2026. Period of observation: 1918-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 69.1°F — Jan 2, 1939 -26.0°F — Jan 12, 1974 1.22 in — Jan 3, 1949
February 80.1°F — Feb 27, 2024 -29.0°F — Feb 5, 1936 2.40 in — Feb 21, 1945
March 93.9°F — Mar 22, 2026 -22.0°F — Mar 5, 1960 2.18 in — Mar 18, 1979
April 93.9°F — Apr 23, 1989 8.1°F — Apr 3, 1975 2.87 in — Apr 9, 1978
May 99.0°F — May 24, 1967 26.1°F — May 2, 1961 4.55 in — May 9, 1950
June 106.0°F — Jun 15, 1946 8.1°F — Jun 8, 2009 4.74 in — Jun 9, 1941
July 111.9°F — Jul 25, 1936 41.0°F — Jul 30, 1971 4.64 in — Jul 16, 2015
August 113.0°F — Aug 4, 1918 37.0°F — Aug 20, 2011 4.79 in — Aug 9, 1977
September 105.1°F — Sep 7, 1939 23.0°F — Sep 29, 1984 5.89 in — Sep 8, 1989
October 97.0°F — Oct 5, 1963 15.1°F — Oct 19, 1972 5.30 in — Oct 22, 1941
November 84.0°F — Nov 5, 2020 -8.0°F — Nov 30, 1964 2.50 in — Nov 16, 1988
December 73.0°F — Dec 6, 1939 -26.0°F — Dec 22, 1983 2.13 in — Dec 14, 2015

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