NOAA's National Centers for Environmental Information
Statewide Rankings
Illinois
February 1978 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| February 1978 1-Month | 16.9°F (-8.4°C) | 29.2°F (-1.6°C) | -12.3°F | 1st Coolest | Coolest to Date | 1978 |
| 131st Warmest | Warmest since: | 2017 | ||||
| Jan– 2-Month | 16.4°F (-8.7°C) | 27.3°F (-2.6°C) | -10.9°F | 2nd Coolest | Coolest to Date | 1979 |
| 130th Warmest | Warmest since: | 2017 | ||||
| Dec 1977– 3-Month | 19.5°F (-6.9°C) | 28.0°F (-2.2°C) | -8.5°F | 1st Coolest | Coolest to Date | 1978 |
| 130th Warmest | Warmest since: | 1932 | ||||
| Nov 1977– 4-Month | 25.1°F (-3.8°C) | 31.2°F (-0.4°C) | -6.1°F | 4th Coolest | Coolest since: | 1977 |
| 127th Warmest | Warmest since: | 1932 | ||||
| Oct 1977– 5-Month | 30.5°F (-0.8°C) | 35.9°F (2.2°C) | -5.4°F | 3rd Coolest | Coolest since: | 1977 |
| 128th Warmest | Warmest since: | 1932 | ||||
| Sep 1977– 6-Month | 36.6°F (2.6°C) | 41.0°F (5.0°C) | -4.4°F | 4th Coolest | Coolest since: | 1977 |
| 127th Warmest | Warmest since: | 1932 | ||||
| Ties: 1936 | ||||||
| Aug 1977– 7-Month | 41.7°F (5.4°C) | 45.6°F (7.6°C) | -3.9°F | 4th Coolest | Coolest since: | 1977 |
| 127th Warmest | Warmest since: | 1932 | ||||
| Jul 1977– 8-Month | 46.2°F (7.9°C) | 49.4°F (9.7°C) | -3.2°F | 5th Coolest | Coolest since: | 1977 |
| 126th Warmest | Warmest since: | 1932 | ||||
| Jun 1977– 9-Month | 48.9°F (9.4°C) | 51.8°F (11.0°C) | -2.9°F | 5th Coolest | Coolest since: | 1977 |
| 126th Warmest | Warmest since: | 1932 | ||||
| Ties: 1936 | ||||||
| May 1977– 10-Month | 50.9°F (10.5°C) | 52.8°F (11.6°C) | -1.9°F | 11th Coolest | Coolest since: | 1918 |
| 120th Warmest | Warmest since: | 1932 | ||||
| Apr 1977– 11-Month | 51.5°F (10.8°C) | 52.7°F (11.5°C) | -1.2°F | 21st Coolest | Coolest since: | 1918 |
| 110th Warmest | Warmest since: | 1932 | ||||
| Mar 1977– 12-Month | 51.0°F (10.6°C) | 51.6°F (10.9°C) | -0.6°F | 34th Coolest | Coolest since: | 1918 |
| 97th Warmest | Warmest since: | 2017 | ||||
| Sep 1976– 18-Month | 45.5°F (7.5°C) | 48.1°F (8.9°C) | -2.6°F | 4th Coolest | Coolest since: | 1905 |
| 126th Warmest | Warmest since: | 2017 | ||||
| Mar 1976– 24-Month | 49.8°F (9.9°C) | 51.6°F (10.9°C) | -1.8°F | 4th Coolest | Coolest since: | 1905 |
| 126th Warmest | Warmest since: | 2017 | ||||
| Mar 1975– 36-Month | 50.6°F (10.3°C) | 51.6°F (10.9°C) | -1.0°F | 11th Coolest | Coolest since: | 1979 |
| 118th Warmest | Warmest since: | 2013, 2018 | ||||
| Mar 1974– 48-Month | 50.9°F (10.5°C) | 51.6°F (10.9°C) | -0.7°F | 18th Coolest | Coolest since: | 1905 |
| 110th Warmest | Warmest since: | 2025 | ||||
| Ties: 1902, 1927, 1962, 1964 | ||||||
| Mar 1973– 60-Month | 51.3°F (10.7°C) | 51.6°F (10.9°C) | -0.3°F | 35th Coolest | Coolest since: | 1905 |
| 92nd Warmest | Warmest since: | 2025 | ||||
| Ties: 1910, 1927, 1952, 1966, 1977 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2025, retrieved on March 27, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings
