NOAA's National Centers for Environmental Information
Statewide Rankings
Illinois
December 1979 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| December 1979 1-Month | 33.8°F (1.0°C) | 29.4°F (-1.4°C) | 4.4°F | 100th Coolest | Coolest since: | 1983 |
| 31st Warmest | Warmest since: | 2015 | ||||
| Nov– 2-Month | 37.1°F (2.8°C) | 35.1°F (1.7°C) | 2.0°F | 95th Coolest | Coolest since: | 1950 |
| 36th Warmest | Warmest since: | 2015 | ||||
| Oct– 3-Month | 42.8°F (6.0°C) | 41.6°F (5.3°C) | 1.2°F | 84th Coolest | Coolest since: | 1976 |
| 47th Warmest | Warmest since: | 1931 | ||||
| Sep– 4-Month | 48.6°F (9.2°C) | 47.8°F (8.8°C) | 0.8°F | 76th Coolest | Coolest since: | 1976 |
| 55th Warmest | Warmest since: | 1931 | ||||
| Aug– 5-Month | 53.4°F (11.9°C) | 52.9°F (11.6°C) | 0.5°F | 64th Coolest | Coolest since: | 1976 |
| 67th Warmest | Warmest since: | 1931 | ||||
| Jul– 6-Month | 56.7°F (13.7°C) | 56.7°F (13.7°C) | 0.0°F | 56th Coolest | Coolest since: | 1976 |
| 75th Warmest | Warmest since: | 1931 | ||||
| Ties: 1927 | ||||||
| Jun– 7-Month | 58.9°F (14.9°C) | 58.8°F (14.9°C) | 0.1°F | 60th Coolest | Coolest since: | 1917 |
| 71st Warmest | Warmest since: | 1931 | ||||
| Ties: 1901, 1944 | ||||||
| May– 8-Month | 59.2°F (15.1°C) | 59.2°F (15.1°C) | 0.0°F | 54th Coolest | Coolest since: | 1917 |
| 77th Warmest | Warmest since: | 1931 | ||||
| Ties: 1897 | ||||||
| Apr– 9-Month | 58.1°F (14.5°C) | 58.3°F (14.6°C) | -0.2°F | 49th Coolest | Coolest since: | 1917 |
| 82nd Warmest | Warmest since: | 1931 | ||||
| Ties: 1895, 1905 | ||||||
| Mar– 10-Month | 56.2°F (13.4°C) | 56.5°F (13.6°C) | -0.3°F | 44th Coolest | Coolest since: | 1917 |
| 87th Warmest | Warmest since: | 2012 | ||||
| Feb– 11-Month | 52.7°F (11.5°C) | 54.0°F (12.2°C) | -1.3°F | 18th Coolest | Coolest since: | 1917 |
| 113th Warmest | Warmest since: | 2024 | ||||
| Ties: 1912, 1972 | ||||||
| Jan– 12-Month | 49.4°F (9.7°C) | 51.6°F (10.9°C) | -2.2°F | 4th Coolest | Coolest since: | 1917 |
| 127th Warmest | Warmest since: | 2012 | ||||
| Ties: 1912 | ||||||
| Jul 1978– 18-Month | 52.0°F (11.1°C) | 53.3°F (11.8°C) | -1.3°F | 11th Coolest | Coolest since: | 1904 |
| 119th Warmest | Warmest since: | 2012 | ||||
| Ties: 1924 | ||||||
| Jan 1978– 24-Month | 49.5°F (9.7°C) | 51.6°F (10.9°C) | -2.1°F | 1st Coolest | Coolest since: | 1904, 1979 |
| 129th Warmest | Warmest since: | 2024 | ||||
| Ties: 1904 | ||||||
| Jan 1977– 36-Month | 50.1°F (10.1°C) | 51.6°F (10.9°C) | -1.5°F | 3rd Coolest | Coolest since: | 1905 |
| 126th Warmest | Warmest since: | 2024 | ||||
| Jan 1976– 48-Month | 50.2°F (10.1°C) | 51.6°F (10.9°C) | -1.4°F | 3rd Coolest | Coolest since: | 1905 |
| 125th Warmest | Warmest since: | 2024 | ||||
| Ties: 1906 | ||||||
| Jan 1975– 60-Month | 50.6°F (10.3°C) | 51.6°F (10.9°C) | -1.0°F | 7th Coolest | Coolest since: | 1905 |
| 120th Warmest | Warmest since: | 2024 | ||||
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
