NOAA's National Centers for Environmental Information
Statewide Rankings
Illinois
December 1980 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| December 1980 1-Month | 30.7°F (-0.7°C) | 29.4°F (-1.4°C) | 1.3°F | 67th Coolest | Coolest since: | 1983 |
| 64th Warmest | Warmest since: | 2015 | ||||
| Nov– 2-Month | 36.0°F (2.2°C) | 35.1°F (1.7°C) | 0.9°F | 72nd Coolest | Coolest since: | 1950 |
| 59th Warmest | Warmest since: | 2015 | ||||
| Ties: 1934 | ||||||
| Oct– 3-Month | 41.1°F (5.1°C) | 41.6°F (5.3°C) | -0.5°F | 46th Coolest | Coolest since: | 1976 |
| 85th Warmest | Warmest since: | 1931 | ||||
| Ties: 1942, 1958 | ||||||
| Sep– 4-Month | 47.8°F (8.8°C) | 47.8°F (8.8°C) | 0.0°F | 57th Coolest | Coolest since: | 1976 |
| 74th Warmest | Warmest since: | 1931 | ||||
| Ties: 1902 | ||||||
| Aug– 5-Month | 53.6°F (12.0°C) | 52.9°F (11.6°C) | 0.7°F | 79th Coolest | Coolest since: | 1976 |
| 52nd Warmest | Warmest since: | 1931 | ||||
| Jul– 6-Month | 57.8°F (14.3°C) | 56.7°F (13.7°C) | 1.1°F | 96th Coolest | Coolest since: | 1976 |
| 35th Warmest | Warmest since: | 1931 | ||||
| Jun– 7-Month | 59.6°F (15.3°C) | 58.8°F (14.9°C) | 0.8°F | 84th Coolest | Coolest since: | 1917 |
| 47th Warmest | Warmest since: | 1931 | ||||
| Ties: 1914, 1965, 1975 | ||||||
| May– 8-Month | 60.1°F (15.6°C) | 59.2°F (15.1°C) | 0.9°F | 89th Coolest | Coolest since: | 1917 |
| 42nd Warmest | Warmest since: | 1931 | ||||
| Apr– 9-Month | 59.0°F (15.0°C) | 58.3°F (14.6°C) | 0.7°F | 78th Coolest | Coolest since: | 1917 |
| 53rd Warmest | Warmest since: | 1931 | ||||
| Mar– 10-Month | 56.7°F (13.7°C) | 56.5°F (13.6°C) | 0.2°F | 70th Coolest | Coolest since: | 1917 |
| 61st Warmest | Warmest since: | 2012 | ||||
| Feb– 11-Month | 53.6°F (12.0°C) | 54.0°F (12.2°C) | -0.4°F | 43rd Coolest | Coolest since: | 1917 |
| 88th Warmest | Warmest since: | 2024 | ||||
| Jan– 12-Month | 51.3°F (10.7°C) | 51.6°F (10.9°C) | -0.3°F | 48th Coolest | Coolest since: | 1917 |
| 83rd Warmest | Warmest since: | 2012 | ||||
| Ties: 1898, 1918, 1935, 1947 | ||||||
| Jul 1979– 18-Month | 53.1°F (11.7°C) | 53.3°F (11.8°C) | -0.2°F | 46th Coolest | Coolest since: | 1904 |
| 84th Warmest | Warmest since: | 2012 | ||||
| Ties: 1909, 1940, 1972 | ||||||
| Jan 1979– 24-Month | 50.3°F (10.2°C) | 51.6°F (10.9°C) | -1.3°F | 7th Coolest | Coolest since: | 1904, 1979 |
| 123rd Warmest | Warmest since: | 2024 | ||||
| Jan 1978– 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 | ||||
| Ties: 1917, 1979 | ||||||
| Jan 1977– 48-Month | 50.4°F (10.2°C) | 51.6°F (10.9°C) | -1.2°F | 6th Coolest | Coolest since: | 1905 |
| 122nd Warmest | Warmest since: | 2024 | ||||
| Ties: 1918 | ||||||
| Jan 1976– 60-Month | 50.4°F (10.2°C) | 51.6°F (10.9°C) | -1.2°F | 4th Coolest | Coolest since: | 1905 |
| 123rd 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 30, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings
