All-time weather records — Aurora, IL

Record high
111.0°F
July 14, 1936
Record low
-26.0°F
January 20, 1985
Wettest day
16.91 in
July 18, 1996

Climate change signal in Aurora

8.5%

of Aurora's all-time daily heat records were set in the last decade (31 of 366 records since 2015).

1.9%

of all-time daily cold records were set in the last decade (7 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 #
1890s
42
24
1900s
17
52
1910s
27
40
1920s
25
35
1930s
70
31
1940s
16
31
1950s
29
43
1960s
8
28
1970s
17
23
1980s
26
26
1990s
18
21
2000s
26
3
2010s
31
9
2020s
14
·

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 1893, the latest in 2026. Period of observation: 1893-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.0°F — Jan 23, 1909 -26.0°F — Jan 20, 1985 2.91 in — Jan 12, 1960
February 73.9°F — Feb 28, 2024 -25.1°F — Feb 2, 1951 3.26 in — Feb 21, 1997
March 84.0°F — Mar 22, 2012 -15.0°F — Mar 8, 1943 3.51 in — Mar 19, 1948
April 91.9°F — Apr 11, 1930 8.1°F — Apr 7, 1982 5.59 in — Apr 18, 2013
May 104.0°F — May 31, 1934 21.0°F — May 10, 1966 3.59 in — May 10, 1990
June 106.0°F — Jun 1, 1934 32.0°F — Jun 7, 1996 4.38 in — Jun 24, 1994
July 111.0°F — Jul 14, 1936 39.9°F — Jul 3, 1907 16.91 in — Jul 18, 1996
August 105.1°F — Aug 9, 1934 37.0°F — Aug 31, 1915 7.12 in — Aug 26, 1972
September 102.9°F — Sep 14, 1939 24.1°F — Sep 30, 1899 6.10 in — Sep 13, 1978
October 93.0°F — Oct 1, 1897 10.9°F — Oct 28, 1925 10.48 in — Oct 10, 1954
November 81.0°F — Nov 1, 1950 -11.0°F — Nov 30, 1947 2.74 in — Nov 11, 1995
December 70.0°F — Dec 4, 2012 -25.1°F — Dec 26, 1914 2.83 in — Dec 3, 1982

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