All-time weather records — Pontiac, IL

Record high
108.0°F
July 14, 1936
Record low
-24.0°F
January 15, 1927
Wettest day
5.67 in
June 17, 1973

Climate change signal in Pontiac

2.5%

of Pontiac's all-time daily heat records were set in the last decade (9 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 #
1900s
21
37
1910s
61
50
1920s
42
51
1930s
91
28
1940s
13
25
1950s
17
26
1960s
17
32
1970s
15
24
1980s
32
49
1990s
15
26
2000s
20
13
2010s
22
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 1904, the latest in 2017. Period of observation: 1903-2017.

Records by month

Month Hottest day Coldest day Wettest day
January 69.1°F — Jan 23, 1909 -24.0°F — Jan 15, 1927 3.40 in — Jan 8, 2008
February 73.0°F — Feb 18, 2017 -23.1°F — Feb 13, 1905 2.55 in — Feb 6, 1942
March 86.0°F — Mar 23, 1910 -14.1°F — Mar 8, 1943 3.80 in — Mar 12, 1923
April 96.1°F — Apr 27, 1986 10.9°F — Apr 7, 1982 2.70 in — Apr 27, 1943
May 102.0°F — May 31, 1934 24.1°F — May 10, 1966 4.76 in — May 11, 1962
June 105.1°F — Jun 1, 1934 37.9°F — Jun 5, 1945 5.67 in — Jun 17, 1973
July 108.0°F — Jul 14, 1936 42.1°F — Jul 17, 1985 4.35 in — Jul 18, 2007
August 104.0°F — Aug 5, 1918 39.9°F — Aug 31, 1915 5.59 in — Aug 3, 1943
September 102.9°F — Sep 4, 1925 26.1°F — Sep 28, 1942 4.25 in — Sep 26, 1933
October 93.9°F — Oct 2, 1922 9.0°F — Oct 30, 1925 2.96 in — Oct 23, 1957
November 82.0°F — Nov 7, 1915 -5.1°F — Nov 25, 1950 4.42 in — Nov 28, 1990
December 71.1°F — Dec 3, 1982 -23.1°F — Dec 28, 1924 5.50 in — Dec 3, 1982

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