NOAA's National Centers for Environmental Information
Statewide Rankings
Illinois
December 2008 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| December 2008 1-Month | 26.8°F (-2.9°C) | 29.4°F (-1.4°C) | -2.6°F | 33rd Coolest | Coolest since: | 1983 |
| 98th Warmest | Warmest since: | 2015 | ||||
| Ties: 1902, 1934 | ||||||
| Nov– 2-Month | 34.0°F (1.1°C) | 35.1°F (1.7°C) | -1.1°F | 38th Coolest | Coolest since: | 1950 |
| 93rd Warmest | Warmest since: | 2015 | ||||
| Ties: 1960, 1961 | ||||||
| Oct– 3-Month | 40.7°F (4.8°C) | 41.6°F (5.3°C) | -0.9°F | 33rd Coolest | Coolest since: | 1976 |
| 98th Warmest | Warmest since: | 1931 | ||||
| Ties: 1907, 1988 | ||||||
| Sep– 4-Month | 47.3°F (8.5°C) | 47.8°F (8.8°C) | -0.5°F | 46th Coolest | Coolest since: | 1976 |
| 85th Warmest | Warmest since: | 1931 | ||||
| Ties: 1904, 1958, 1992 | ||||||
| Aug– 5-Month | 52.2°F (11.2°C) | 52.9°F (11.6°C) | -0.7°F | 38th Coolest | Coolest since: | 1976 |
| 93rd Warmest | Warmest since: | 1931 | ||||
| Jul– 6-Month | 55.9°F (13.3°C) | 56.7°F (13.7°C) | -0.8°F | 34th Coolest | Coolest since: | 1976 |
| 97th Warmest | Warmest since: | 1931 | ||||
| Ties: 1981 | ||||||
| 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 | ||||
| Ties: 1905, 1961, 1966, 1997 | ||||||
| May– 8-Month | 58.5°F (14.7°C) | 59.2°F (15.1°C) | -0.7°F | 33rd Coolest | Coolest since: | 1917 |
| 98th Warmest | Warmest since: | 1931 | ||||
| Apr– 9-Month | 57.7°F (14.3°C) | 58.3°F (14.6°C) | -0.6°F | 32nd Coolest | Coolest since: | 1917 |
| 99th 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 | ||||
| Ties: 1912, 1928, 1966 | ||||||
| Feb– 11-Month | 53.1°F (11.7°C) | 54.0°F (12.2°C) | -0.9°F | 28th Coolest | Coolest since: | 1917 |
| 103rd Warmest | Warmest since: | 2024 | ||||
| Jan– 12-Month | 50.9°F (10.5°C) | 51.6°F (10.9°C) | -0.7°F | 36th Coolest | Coolest since: | 1917 |
| 95th Warmest | Warmest since: | 2012 | ||||
| Ties: 1909, 1915, 1962, 1993 | ||||||
| Jul 2007– 18-Month | 53.6°F (12.0°C) | 53.3°F (11.8°C) | 0.3°F | 71st Coolest | Coolest since: | 1904 |
| 59th Warmest | Warmest since: | 2012 | ||||
| Ties: 1911, 1937, 1986 | ||||||
| Jan 2007– 24-Month | 52.3°F (11.3°C) | 51.6°F (10.9°C) | 0.7°F | 91st Coolest | Coolest since: | 1904, 1979 |
| 39th Warmest | Warmest since: | 2024 | ||||
| Jan 2006– 36-Month | 52.9°F (11.6°C) | 51.6°F (10.9°C) | 1.3°F | 106th Coolest | Coolest since: | 1905 |
| 23rd Warmest | Warmest since: | 2024 | ||||
| Ties: 1922, 1956, 2002 | ||||||
| Jan 2005– 48-Month | 53.1°F (11.7°C) | 51.6°F (10.9°C) | 1.5°F | 117th Coolest | Coolest since: | 1905 |
| 11th Warmest | Warmest since: | 2024 | ||||
| Jan 2004– 60-Month | 53.0°F (11.7°C) | 51.6°F (10.9°C) | 1.4°F | 117th Coolest | Coolest since: | 1905 |
| 10th Warmest | Warmest since: | 2024 | ||||
| Ties: 1935, 1956, 2006 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2025, retrieved on March 29, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings
