All-time weather records — New Grand Chain, IL

Record high
108.0°F
September 6, 1925
Record low
-8.0°F
February 19, 2015
Wettest day
19.00 in
March 5, 2004

Climate change signal in New Grand Chain

25.1%

of New Grand Chain's all-time daily heat records were set in the last decade (92 of 366 records since 2015).

17.2%

of all-time daily cold records were set in the last decade (63 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 #
1920s
148
99
1930s
·
·
1940s
·
·
1990s
27
48
2000s
51
111
2010s
87
70
2020s
53
38

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 1923, the latest in 2026. Period of observation: 1923-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 71.1°F — Jan 16, 1928 -4.0°F — Jan 1, 1928 5.00 in — Jan 30, 2010
February 75.9°F — Feb 21, 2017 -8.0°F — Feb 19, 2015 3.25 in — Feb 16, 2025
March 81.0°F — Mar 8, 1925 -0.9°F — Mar 6, 2015 19.00 in — Mar 5, 2004
April 89.1°F — Apr 24, 1925 9.0°F — Apr 4, 2000 6.43 in — Apr 4, 2008
May 96.1°F — May 22, 1925 35.1°F — May 4, 2011 4.64 in — May 25, 1946
June 104.0°F — Jun 30, 2012 43.0°F — Jun 7, 2000 3.50 in — Jun 1, 2013
July 105.1°F — Jul 20, 2012 48.9°F — Jul 21, 2001 6.70 in — Jul 20, 2023
August 104.0°F — Aug 19, 1925 50.0°F — Aug 13, 2000 4.33 in — Aug 23, 1942
September 108.0°F — Sep 6, 1925 36.0°F — Sep 24, 1928 4.15 in — Sep 25, 1945
October 93.9°F — Oct 3, 2019 23.0°F — Oct 29, 1925 5.25 in — Oct 18, 2007
November 80.1°F — Nov 4, 1924 12.0°F — Nov 13, 2019 4.42 in — Nov 22, 1934
December 73.9°F — Dec 26, 2021 -8.0°F — Dec 24, 2022 4.61 in — Dec 17, 2001

Click a month to see every daily record for that month in New Grand Chain.