All-time weather records — Viola, IL

Record high
113.0°F
July 15, 1936
Record low
-33.0°F
January 30, 2019
Wettest day
6.90 in
August 17, 1930

Climate change signal in Viola

9%

of Viola's all-time daily heat records were set in the last decade (33 of 366 records since 2015).

3%

of all-time daily cold records were set in the last decade (11 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
23
39
1910s
36
45
1920s
31
55
1930s
84
35
1940s
23
21
1950s
41
38
1960s
17
38
1970s
14
35
1980s
26
22
1990s
13
14
2000s
11
8
2010s
27
14
2020s
20
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 1901, the latest in 2026. Period of observation: 1901-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 69.1°F — Jan 31, 1989 -33.0°F — Jan 30, 2019 2.23 in — Jan 24, 1938
February 77.0°F — Feb 28, 2024 -29.9°F — Feb 13, 1905 1.90 in — Feb 20, 2018
March 93.9°F — Mar 22, 1928 -15.0°F — Mar 1, 1962 2.90 in — Mar 24, 1954
April 93.0°F — Apr 10, 1930 10.0°F — Apr 6, 1982 4.87 in — Apr 21, 1973
May 102.9°F — May 31, 1934 26.1°F — May 2, 2005 4.80 in — May 1, 2003
June 104.0°F — Jun 29, 1936 36.0°F — Jun 4, 1945 3.74 in — Jun 26, 1973
July 113.0°F — Jul 15, 1936 44.1°F — Jul 14, 1975 4.06 in — Jul 18, 1902
August 106.0°F — Aug 18, 1936 37.9°F — Aug 30, 1915 6.90 in — Aug 17, 1930
September 102.0°F — Sep 1, 1953 19.0°F — Sep 13, 1938 5.22 in — Sep 13, 1961
October 93.0°F — Oct 1, 2023 9.0°F — Oct 28, 1925 5.17 in — Oct 6, 1955
November 81.0°F — Nov 1, 1902 -6.0°F — Nov 26, 1977 2.66 in — Nov 18, 2015
December 73.0°F — Dec 16, 2021 -22.0°F — Dec 28, 1924 2.70 in — Dec 15, 1987

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