Climate at a Glance
Statewide Rankings
Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of April 2022. For more information, please see Climatological Rankings.
Illinois
Average Temperature Rankings, October 2021
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2021) |
Warmest/Coolest Since |
Record |
|---|---|---|---|---|---|---|
|
October 2021 1-Month |
60.2°F (15.7°C) | 54.6°F (12.6°C) |
5.6°F (3.1°C) | 123rd Coolest | Coolest since: 2020 | 1925 |
| 5th Warmest | Warmest since: 1971 | 1963 | ||||
| Ties: 1956 | ||||||
|
Sep–Oct 2021 2-Month |
64.9°F (18.3°C) | 60.4°F (15.8°C) |
4.5°F (2.5°C) | 123rd Coolest | Coolest since: 2020 | 1917 |
| 5th Warmest | Warmest since: 2016 | 1897, 2016 | ||||
| Ties: 1947, 2007 | ||||||
|
Aug–Oct 2021 3-Month |
68.4°F (20.2°C) | 64.7°F (18.2°C) |
3.7°F (2.0°C) | 123rd Coolest | Coolest since: 2020 | 1917 |
| 5th Warmest | Warmest since: 2016 | 1947 | ||||
|
Jul–Oct 2021 4-Month |
70.0°F (21.1°C) | 67.5°F (19.7°C) |
2.5°F (1.4°C) | 120th Coolest | Coolest since: 2020 | 1917 |
| 8th Warmest | Warmest since: 2016 | 1936 | ||||
|
Jun–Oct 2021 5-Month |
70.8°F (21.6°C) | 68.2°F (20.1°C) |
2.6°F (1.5°C) | 123rd Coolest | Coolest since: 2020 | 1917 |
| 5th Warmest | Warmest since: 2016 | 1936 | ||||
| Ties: 2007 | ||||||
|
May–Oct 2021 6-Month |
69.2°F (20.7°C) | 67.2°F (19.6°C) |
2.0°F (1.1°C) | 115th Coolest | Coolest since: 2020 | 1917 |
| 13th Warmest | Warmest since: 2018 | 1936 | ||||
| Ties: 1914, 1931, 1933 | ||||||
|
Apr–Oct 2021 7-Month |
66.8°F (19.3°C) | 65.0°F (18.3°C) |
1.8°F (1.0°C) | 114th Coolest | Coolest since: 2020 | 1917 |
| 14th Warmest | Warmest since: 2016 | 2010 | ||||
| Ties: 1931, 1954 | ||||||
|
Mar–Oct 2021 8-Month |
64.2°F (17.9°C) | 61.8°F (16.6°C) |
2.4°F (1.3°C) | 120th Coolest | Coolest since: 2020 | 1917 |
| 8th Warmest | Warmest since: 2016 | 2012 | ||||
|
Feb–Oct 2021 9-Month |
59.4°F (15.2°C) | 58.2°F (14.6°C) |
1.2°F (0.6°C) | 102nd Coolest | Coolest since: 2020 | 1917 |
| 26th Warmest | Warmest since: 2018 | 2012 | ||||
| Ties: 1934, 1941 | ||||||
|
Jan–Oct 2021 10-Month |
56.4°F (13.6°C) | 54.9°F (12.7°C) |
1.5°F (0.9°C) | 103rd Coolest | Coolest since: 2020 | 1904 |
| 25th Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1911, 1919, 1986 | ||||||
|
Dec 2020–Oct 2021 11-Month |
54.3°F (12.4°C) | 52.6°F (11.4°C) |
1.7°F (1.0°C) | 106th Coolest | Coolest since: 2020 | 1904 |
| 21st Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1941, 1955 | ||||||
|
Nov 2020–Oct 2021 12-Month |
53.7°F (12.1°C) | 51.6°F (10.9°C) |
2.1°F (1.2°C) | 114th Coolest | Coolest since: 2020 | 1904 |
| 13th Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1953 | ||||||
|
May 2020–Oct 2021 18-Month |
58.1°F (14.5°C) | 56.8°F (13.8°C) |
1.3°F (0.7°C) | 103rd Coolest | Coolest since: 2020 | 1904 |
| 24th Warmest | Warmest since: 2017 | 2012 | ||||
| Ties: 1919, 1935 | ||||||
|
Nov 2019–Oct 2021 24-Month |
53.1°F (11.7°C) | 51.6°F (10.9°C) |
1.5°F (0.8°C) | 109th Coolest | Coolest since: 2020 | 1905 |
| 17th Warmest | Warmest since: 2018 | 2017 | ||||
| Ties: 1934, 1991, 1992 | ||||||
|
Nov 2018–Oct 2021 36-Month |
52.7°F (11.5°C) | 51.6°F (10.9°C) |
1.1°F (0.6°C) | 103rd Coolest | Coolest since: 2020 | 1904, 1979 |
| 22nd Warmest | Warmest since: 2019 | 2018 | ||||
| Ties: 1935, 1988, 1992, 2005 | ||||||
|
Nov 2017–Oct 2021 48-Month |
52.7°F (11.5°C) | 51.6°F (10.9°C) |
1.1°F (0.6°C) | 105th Coolest | Coolest since: 2017 | 1905 |
| 19th Warmest | Warmest since: 2020 | 2019 | ||||
| Ties: 2003, 2017 | ||||||
|
Nov 2016–Oct 2021 60-Month |
53.1°F (11.7°C) | 51.5°F (10.8°C) |
1.6°F (0.9°C) | 118th Coolest | Coolest since: 2018 | 1905, 1906 |
| 5th Warmest | Warmest since: 2020 | 2002, 2020 | ||||
| Ties: 1934, 1935, 2006, 2007 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published May 2022, retrieved on May 18, 2022 from https://www.ncdc.noaa.gov/cag/