NOAA's National Centers for Environmental Information
Statewide Rankings
Illinois
January 1931 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| January 1931 1-Month | 31.5°F (-0.3°C) | 25.3°F (-3.7°C) | 6.2°F | 114th Coolest | Coolest since: | 1977 |
| 18th Warmest | Warmest since: | 2006 | ||||
| Dec 1930– 2-Month | 30.7°F (-0.7°C) | 27.5°F (-2.5°C) | 3.2°F | 98th Coolest | Coolest since: | 1918 |
| 33rd Warmest | Warmest since: | 1932 | ||||
| Nov 1930– 3-Month | 34.3°F (1.3°C) | 31.9°F (-0.1°C) | 2.4°F | 97th Coolest | Coolest since: | 1977 |
| 34th Warmest | Warmest since: | 1932 | ||||
| Oct 1930– 4-Month | 38.8°F (3.8°C) | 37.6°F (3.1°C) | 1.2°F | 81st Coolest | Coolest since: | 1977 |
| 50th Warmest | Warmest since: | 1932 | ||||
| Ties: 1909 | ||||||
| Sep 1930– 5-Month | 44.7°F (7.1°C) | 43.3°F (6.3°C) | 1.4°F | 87th Coolest | Coolest since: | 1977 |
| 44th Warmest | Warmest since: | 1932 | ||||
| Aug 1930– 6-Month | 49.8°F (9.9°C) | 48.4°F (9.1°C) | 1.4°F | 95th Coolest | Coolest since: | 1977 |
| 36th Warmest | Warmest since: | 1932 | ||||
| Jul 1930– 7-Month | 53.9°F (12.2°C) | 52.2°F (11.2°C) | 1.7°F | 106th Coolest | Coolest since: | 1977 |
| 25th Warmest | Warmest since: | 1932 | ||||
| Jun 1930– 8-Month | 56.0°F (13.3°C) | 54.6°F (12.6°C) | 1.4°F | 98th Coolest | Coolest since: | 1918, 1977 |
| 33rd Warmest | Warmest since: | 1932 | ||||
| May 1930– 9-Month | 56.8°F (13.8°C) | 55.5°F (13.1°C) | 1.3°F | 99th Coolest | Coolest since: | 1918 |
| 32nd Warmest | Warmest since: | 1932 | ||||
| Apr 1930– 10-Month | 56.6°F (13.7°C) | 55.1°F (12.8°C) | 1.5°F | 103rd Coolest | Coolest since: | 1918 |
| 28th Warmest | Warmest since: | 1932 | ||||
| Mar 1930– 11-Month | 55.0°F (12.8°C) | 53.7°F (12.1°C) | 1.3°F | 100th Coolest | Coolest since: | 1918 |
| 31st Warmest | Warmest since: | 2013 | ||||
| Feb 1930– 12-Month | 53.6°F (12.0°C) | 51.6°F (10.9°C) | 2.0°F | 114th Coolest | Coolest since: | 1918 |
| 17th Warmest | Warmest since: | 2013 | ||||
| Aug 1929– 18-Month | 50.9°F (10.5°C) | 50.5°F (10.3°C) | 0.4°F | 78th Coolest | Coolest since: | 1905, 1918 |
| 52nd Warmest | Warmest since: | 2017 | ||||
| Feb 1929– 24-Month | 51.7°F (10.9°C) | 51.6°F (10.9°C) | 0.1°F | 70th Coolest | Coolest since: | 1918 |
| 60th Warmest | Warmest since: | 2013 | ||||
| Feb 1928– 36-Month | 51.4°F (10.8°C) | 51.6°F (10.9°C) | -0.2°F | 43rd Coolest | Coolest since: | 1905 |
| 86th Warmest | Warmest since: | 2013 | ||||
| Feb 1927– 48-Month | 51.6°F (10.9°C) | 51.6°F (10.9°C) | 0.0°F | 55th Coolest | Coolest since: | 1905 |
| 73rd Warmest | Warmest since: | 2025 | ||||
| Feb 1926– 60-Month | 51.3°F (10.7°C) | 51.6°F (10.9°C) | -0.3°F | 39th Coolest | Coolest since: | 1906 |
| 88th Warmest | Warmest since: | 2025 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2025, retrieved on March 26, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings
