NOAA's National Centers for Environmental Information
Statewide Rankings
Illinois
March 1899 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| March 1899 1-Month | 33.1°F (0.6°C) | 39.8°F (4.3°C) | -6.7°F | 6th Coolest | Coolest to Date | 1960 |
| 125th Warmest | Warmest since: | 2012 | ||||
| Feb– 2-Month | 25.6°F (-3.6°C) | 34.5°F (1.4°C) | -8.9°F | 2nd Coolest | Coolest to Date | 1978 |
| 129th Warmest | Warmest since: | 2012 | ||||
| Jan– 3-Month | 25.4°F (-3.7°C) | 31.4°F (-0.3°C) | -6.0°F | 6th Coolest | Coolest since: | 1912 |
| 125th Warmest | Warmest since: | 2012 | ||||
| Dec 1898– 4-Month | 25.5°F (-3.6°C) | 31.0°F (-0.6°C) | -5.5°F | 5th Coolest | Coolest to Date | 1978 |
| 125th Warmest | Warmest since: | 2012 | ||||
| Nov 1898– 5-Month | 27.7°F (-2.4°C) | 32.9°F (0.5°C) | -5.2°F | 5th Coolest | Coolest to Date | 1912 |
| 125th Warmest | Warmest since: | 2012 | ||||
| Oct 1898– 6-Month | 31.6°F (-0.2°C) | 36.6°F (2.6°C) | -5.0°F | 3rd Coolest | Coolest to Date | 1912, 1978 |
| 127th Warmest | Warmest since: | 2012 | ||||
| Sep 1898– 7-Month | 36.9°F (2.7°C) | 40.8°F (4.9°C) | -3.9°F | 6th Coolest | Coolest to Date | 1977, 1978 |
| 124th Warmest | Warmest since: | 2017 | ||||
| Aug 1898– 8-Month | 41.4°F (5.2°C) | 44.9°F (7.2°C) | -3.5°F | 6th Coolest | Coolest to Date | 1977 |
| 124th Warmest | Warmest since: | 2017 | ||||
| Jul 1898– 9-Month | 45.2°F (7.3°C) | 48.3°F (9.1°C) | -3.1°F | 6th Coolest | Coolest to Date | 1977 |
| 124th Warmest | Warmest since: | 2012 | ||||
| Jun 1898– 10-Month | 47.9°F (8.8°C) | 50.6°F (10.3°C) | -2.7°F | 6th Coolest | Coolest to Date | 1904 |
| 124th Warmest | Warmest since: | 2012 | ||||
| May 1898– 11-Month | 49.2°F (9.6°C) | 51.7°F (10.9°C) | -2.5°F | 5th Coolest | Coolest to Date | 1918 |
| 125th Warmest | Warmest since: | 2012 | ||||
| Apr 1898– 12-Month | 49.2°F (9.6°C) | 51.6°F (10.9°C) | -2.4°F | 6th Coolest | Coolest to Date | 1918 |
| 124th Warmest | Warmest since: | 2012 | ||||
| Oct 1897– 18-Month | 45.4°F (7.4°C) | 46.6°F (8.1°C) | -1.2°F | 15th Coolest | Coolest to Date | 1905 |
| 114th Warmest | Warmest since: | 2017 | ||||
| Apr 1897– 24-Month | 50.7°F (10.4°C) | 51.6°F (10.9°C) | -0.9°F | 20th Coolest | Coolest to Date | 1905 |
| 109th Warmest | Warmest since: | 2017 | ||||
| Apr 1896– 36-Month | 51.2°F (10.7°C) | 51.6°F (10.9°C) | -0.4°F | 33rd Coolest | Coolest to Date | 1979 |
| 95th Warmest | Warmest since: | 2018 | ||||
| Apr 1895– 48-Month | 51.2°F (10.7°C) | 51.6°F (10.9°C) | -0.4°F | 30th Coolest | Coolest to Date | 1980 |
| 97th Warmest | Warmest to Date | 2019 |
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2025, retrieved on March 23, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings
