Weather history and climate summary information is available for the following locations:
- Belleville
- Chicago
- Moline
- Peoria
- Springfield
Warmest February Days
The warmest February days in Illinois are:
| Belleville, Illinois | 1972 | 81.3°F |
| Belleville, Illinois | 1976 | 78.1°F |
| Belleville, Illinois | 1996 | 77°F |
| Belleville, Illinois | 1938 | 76.3°F |
| Belleville, Illinois | 1945 | 75.4°F |
Coldest February Days
The coldest February days in Illinois were:
| Moline, Illinois | 1996 | -27.9°F |
| Moline, Illinois | 1979 | -25.1°F |
| Springfield, Illinois | 1979 | -20°F |
| Springfield, Illinois | 1996 | -18.9°F |
| Peoria, Illinois | 1996 | -18.9°F |
Wettest February Days
The wettest single days in February occurred:
| Belleville, Illinois | 1986 | 4.6 inches |
| Springfield, Illinois | 1973 | 4.3 inches |
| Chicago, Illinois | 1973 | 4.1 inches |
| Moline, Illinois | 1973 | 3.2 inches |
| Peoria, Illinois | 1997 | 3.1 inches |