NOAA's National Centers for Environmental Information
Statewide Rankings
Illinois
December 1966 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| December 1966 1-Month | 30.2°F (-1.0°C) | 29.4°F (-1.4°C) | 0.8°F | 59th Coolest | Coolest since: | 1983 |
| 72nd Warmest | Warmest since: | 2015 | ||||
| Nov– 2-Month | 36.6°F (2.6°C) | 35.1°F (1.7°C) | 1.5°F | 85th Coolest | Coolest since: | 1950 |
| 46th Warmest | Warmest since: | 2015 | ||||
| Ties: 1933, 1938, 1954 | ||||||
| Oct– 3-Month | 41.7°F (5.4°C) | 41.6°F (5.3°C) | 0.1°F | 65th Coolest | Coolest since: | 1976 |
| 66th Warmest | Warmest since: | 1931 | ||||
| Ties: 1897 | ||||||
| Sep– 4-Month | 47.1°F (8.4°C) | 47.8°F (8.8°C) | -0.7°F | 42nd Coolest | Coolest since: | 1976 |
| 89th Warmest | Warmest since: | 1931 | ||||
| Aug– 5-Month | 51.8°F (11.0°C) | 52.9°F (11.6°C) | -1.1°F | 27th Coolest | Coolest since: | 1976 |
| 104th Warmest | Warmest since: | 1931 | ||||
| Jul– 6-Month | 56.3°F (13.5°C) | 56.7°F (13.7°C) | -0.4°F | 46th Coolest | Coolest since: | 1976 |
| 85th Warmest | Warmest since: | 1931 | ||||
| Jun– 7-Month | 58.4°F (14.7°C) | 58.8°F (14.9°C) | -0.4°F | 44th Coolest | Coolest since: | 1917 |
| 87th Warmest | Warmest since: | 1931 | ||||
| May– 8-Month | 58.3°F (14.6°C) | 59.2°F (15.1°C) | -0.9°F | 28th Coolest | Coolest since: | 1917 |
| 103rd Warmest | Warmest since: | 1931 | ||||
| Apr– 9-Month | 57.3°F (14.1°C) | 58.3°F (14.6°C) | -1.0°F | 23rd Coolest | Coolest since: | 1917 |
| 108th Warmest | Warmest since: | 1931 | ||||
| Mar– 10-Month | 55.8°F (13.2°C) | 56.5°F (13.6°C) | -0.7°F | 32nd Coolest | Coolest since: | 1917 |
| 99th Warmest | Warmest since: | 2012 | ||||
| Feb– 11-Month | 53.3°F (11.8°C) | 54.0°F (12.2°C) | -0.7°F | 36th Coolest | Coolest since: | 1917 |
| 95th Warmest | Warmest since: | 2024 | ||||
| Ties: 1898, 1906, 1945 | ||||||
| Jan– 12-Month | 50.6°F (10.3°C) | 51.6°F (10.9°C) | -1.0°F | 24th Coolest | Coolest since: | 1917 |
| 107th Warmest | Warmest since: | 2012 | ||||
| Jul 1965– 18-Month | 53.0°F (11.7°C) | 53.3°F (11.8°C) | -0.3°F | 42nd Coolest | Coolest since: | 1904 |
| 88th Warmest | Warmest since: | 2012 | ||||
| Jan 1965– 24-Month | 51.3°F (10.7°C) | 51.6°F (10.9°C) | -0.3°F | 45th Coolest | Coolest since: | 1904, 1979 |
| 85th Warmest | Warmest since: | 2024 | ||||
| Jan 1964– 36-Month | 51.7°F (10.9°C) | 51.6°F (10.9°C) | 0.1°F | 68th Coolest | Coolest since: | 1905 |
| 61st Warmest | Warmest since: | 2024 | ||||
| Jan 1963– 48-Month | 51.4°F (10.8°C) | 51.6°F (10.9°C) | -0.2°F | 41st Coolest | Coolest since: | 1905 |
| 87th Warmest | Warmest since: | 2024 | ||||
| Jan 1962– 60-Month | 51.3°F (10.7°C) | 51.6°F (10.9°C) | -0.3°F | 39th Coolest | Coolest since: | 1905 |
| 88th Warmest | Warmest since: | 2024 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2025, retrieved on April 2, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings
