NOAA's National Centers for Environmental Information
Statewide Rankings
Illinois
January 2025 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| January 2025 1-Month | 23.0°F (-5.0°C) | 25.3°F (-3.7°C) | -2.3°F | 38th Coolest | Coolest since: | 1977 |
| 94th Warmest | Warmest since: | 2006 | ||||
| Dec 2024– 2-Month | 28.5°F (-1.9°C) | 27.5°F (-2.5°C) | 1.0°F | 65th Coolest | Coolest since: | 1918 |
| 66th Warmest | Warmest since: | 1932 | ||||
| Ties: 1916 | ||||||
| Nov 2024– 3-Month | 34.5°F (1.4°C) | 31.9°F (-0.1°C) | 2.6°F | 103rd Coolest | Coolest since: | 1977 |
| 28th Warmest | Warmest since: | 1932 | ||||
| Ties: 2020 | ||||||
| Oct 2024– 4-Month | 40.6°F (4.8°C) | 37.6°F (3.1°C) | 3.0°F | 113th Coolest | Coolest since: | 1977 |
| 18th Warmest | Warmest since: | 1932 | ||||
| Ties: 1923, 1999 | ||||||
| Sep 2024– 5-Month | 46.2°F (7.9°C) | 43.3°F (6.3°C) | 2.9°F | 116th Coolest | Coolest since: | 1977 |
| 15th Warmest | Warmest since: | 1932 | ||||
| Ties: 1942 | ||||||
| Aug 2024– 6-Month | 50.8°F (10.4°C) | 48.4°F (9.1°C) | 2.4°F | 115th Coolest | Coolest since: | 1977 |
| 16th Warmest | Warmest since: | 1932 | ||||
| Jul 2024– 7-Month | 54.1°F (12.3°C) | 52.2°F (11.2°C) | 1.9°F | 110th Coolest | Coolest since: | 1977 |
| 21st Warmest | Warmest since: | 1932 | ||||
| Ties: 1954 | ||||||
| Jun 2024– 8-Month | 56.7°F (13.7°C) | 54.6°F (12.6°C) | 2.1°F | 114th Coolest | Coolest since: | 1918, 1977 |
| 17th Warmest | Warmest since: | 1932 | ||||
| Ties: 1989, 2008 | ||||||
| May 2024– 9-Month | 57.8°F (14.3°C) | 55.5°F (13.1°C) | 2.3°F | 117th Coolest | Coolest since: | 1918 |
| 14th Warmest | Warmest since: | 1932 | ||||
| Ties: 1934 | ||||||
| Apr 2024– 10-Month | 57.5°F (14.2°C) | 55.1°F (12.8°C) | 2.4°F | 124th Coolest | Coolest since: | 1918 |
| 7th Warmest | Warmest since: | 1932 | ||||
| Ties: 1914, 1999, 2012, 2013 | ||||||
| Mar 2024– 11-Month | 56.5°F (13.6°C) | 53.7°F (12.1°C) | 2.8°F | 127th Coolest | Coolest since: | 1918 |
| 4th Warmest | Warmest since: | 2013 | ||||
| Feb 2024– 12-Month | 55.2°F (12.9°C) | 51.6°F (10.9°C) | 3.6°F | 129th Coolest | Coolest since: | 1918 |
| 2nd Warmest | Warmest since: | 2013 | ||||
| Ties: 2017 | ||||||
| Aug 2023– 18-Month | 53.9°F (12.2°C) | 50.5°F (10.3°C) | 3.4°F | 127th Coolest | Coolest since: | 1905, 1918 |
| 3rd Warmest | Warmest since: | 2017 | ||||
| Feb 2023– 24-Month | 54.6°F (12.6°C) | 51.6°F (10.9°C) | 3.0°F | 128th Coolest | Coolest since: | 1918 |
| 2nd Warmest | Warmest since: | 2013 | ||||
| Feb 2022– 36-Month | 54.1°F (12.3°C) | 51.6°F (10.9°C) | 2.5°F | 127th Coolest | Coolest since: | 1905 |
| 2nd Warmest | Warmest since: | 2013 | ||||
| Feb 2021– 48-Month | 53.9°F (12.2°C) | 51.6°F (10.9°C) | 2.3°F | 127th Coolest | Coolest since: | 1905 |
| 1st Warmest | Warmest to Date | 2025 | ||||
| Feb 2020– 60-Month | 53.7°F (12.1°C) | 51.6°F (10.9°C) | 2.1°F | 126th Coolest | Coolest since: | 1906 |
| 1st Warmest | Warmest to Date | 2025 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2025, retrieved on March 28, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings
