NOAA's National Centers for Environmental Information
Statewide Rankings
Illinois
March 2018 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| March 2018 1-Month | 39.2°F (4.0°C) | 39.8°F (4.3°C) | -0.6°F | 55th Coolest | Coolest since: | 1960 |
| 76th Warmest | Warmest since: | 2012 | ||||
| Ties: 1957, 1972 | ||||||
| Feb– 2-Month | 35.5°F (1.9°C) | 34.5°F (1.4°C) | 1.0°F | 79th Coolest | Coolest since: | 1978 |
| 52nd Warmest | Warmest since: | 2012 | ||||
| Ties: 1908, 1909, 1956 | ||||||
| Jan– 3-Month | 31.7°F (-0.2°C) | 31.4°F (-0.3°C) | 0.3°F | 67th Coolest | Coolest since: | 1912 |
| 64th Warmest | Warmest since: | 2012 | ||||
| Dec 2017– 4-Month | 31.2°F (-0.4°C) | 31.0°F (-0.6°C) | 0.2°F | 61st Coolest | Coolest since: | 1978 |
| 69th Warmest | Warmest since: | 2012 | ||||
| Ties: 1941, 1975 | ||||||
| Nov 2017– 5-Month | 33.4°F (0.8°C) | 32.9°F (0.5°C) | 0.5°F | 70th Coolest | Coolest since: | 1912 |
| 60th Warmest | Warmest since: | 2012 | ||||
| Ties: 1898, 1927 | ||||||
| Oct 2017– 6-Month | 37.5°F (3.1°C) | 36.6°F (2.6°C) | 0.9°F | 84th Coolest | Coolest since: | 1912, 1978 |
| 46th Warmest | Warmest since: | 2012 | ||||
| Ties: 1903 | ||||||
| Sep 2017– 7-Month | 42.0°F (5.6°C) | 40.8°F (4.9°C) | 1.2°F | 91st Coolest | Coolest since: | 1977, 1978 |
| 39th Warmest | Warmest since: | 2017 | ||||
| Aug 2017– 8-Month | 45.5°F (7.5°C) | 44.9°F (7.2°C) | 0.6°F | 74th Coolest | Coolest since: | 1977 |
| 56th Warmest | Warmest since: | 2017 | ||||
| Ties: 1966 | ||||||
| Jul 2017– 9-Month | 48.9°F (9.4°C) | 48.3°F (9.1°C) | 0.6°F | 78th Coolest | Coolest since: | 1977 |
| 52nd Warmest | Warmest since: | 2012 | ||||
| Ties: 1901, 1934, 1945, 1956, 2011 | ||||||
| Jun 2017– 10-Month | 51.3°F (10.7°C) | 50.6°F (10.3°C) | 0.7°F | 79th Coolest | Coolest since: | 1904 |
| 51st Warmest | Warmest since: | 2012 | ||||
| Ties: 1909, 1923, 1990 | ||||||
| May 2017– 11-Month | 52.3°F (11.3°C) | 51.7°F (10.9°C) | 0.6°F | 77th Coolest | Coolest since: | 1918 |
| 53rd Warmest | Warmest since: | 2012 | ||||
| Ties: 1898, 1909 | ||||||
| Apr 2017– 12-Month | 52.6°F (11.4°C) | 51.6°F (10.9°C) | 1.0°F | 91st Coolest | Coolest since: | 1918 |
| 39th Warmest | Warmest since: | 2012 | ||||
| Ties: 1923, 1945, 1983 | ||||||
| Oct 2016– 18-Month | 49.2°F (9.6°C) | 46.6°F (8.1°C) | 2.6°F | 122nd Coolest | Coolest since: | 1905 |
| 7th Warmest | Warmest since: | 2017 | ||||
| Ties: 1922, 1932, 1992, 2012 | ||||||
| Apr 2016– 24-Month | 54.0°F (12.2°C) | 51.6°F (10.9°C) | 2.4°F | 123rd Coolest | Coolest since: | 1905 |
| 6th Warmest | Warmest since: | 2017 | ||||
| Ties: 1932 | ||||||
| Apr 2015– 36-Month | 54.3°F (12.4°C) | 51.6°F (10.9°C) | 2.7°F | 127th Coolest | Coolest since: | 1979 |
| 1st Warmest | Warmest to Date | 2018 | ||||
| Apr 2014– 48-Month | 53.3°F (11.8°C) | 51.6°F (10.9°C) | 1.7°F | 121st Coolest | Coolest since: | 1980 |
| 6th Warmest | Warmest since: | 2019 | ||||
| Ties: 2008 | ||||||
| Apr 2013– 60-Month | 52.5°F (11.4°C) | 51.6°F (10.9°C) | 0.9°F | 101st Coolest | Coolest since: | 1906 |
| 25th Warmest | Warmest since: | 2020 | ||||
| Ties: 1923, 1942, 1958, 1990, 2000, 2001, 2005, 2010, 2014 | ||||||
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
