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Illinois: first snow, freeze dates and white Christmas odds
Snow and freeze history for 6 NOAA weather stations in Illinois, computed from 1995–2024 daily records. The earliest typical first snow among them is Moline (Quad Cities) (median Nov 24). The best white Christmas odds are at Chicago (O'Hare Airport) (39%).
| City | First measurable snow (median) | First 1"+ snow (median) | White Christmas chance | Avg snowfall / season | First fall freeze (median) | Last spring freeze (median) |
|---|---|---|---|---|---|---|
| Chicago (O'Hare Airport) | Nov 20 | Dec 4 | 39% | 38.3" | Oct 26 | Apr 21 |
| Moline (Quad Cities) | Nov 24 | Dec 1 | 34% | 35.8" | Oct 16 | Apr 26 |
| Peoria | Nov 30 | Dec 6 | 28% | 26.1" | Oct 18 | Apr 15 |
| Quincy | – | – | – | – | Oct 22 | Apr 13 |
| Rockford | Nov 20 | Dec 4 | – | 34.9" | Oct 14 | Apr 27 |
| Springfield (Illinois) | Dec 4 | Dec 12 | 20% | 21.5" | Oct 14 | Apr 15 |
Planning for winter? Heat pump vs gas furnace, propane and oil: heating cost in Illinois (on our sister site PlugVsPump, from EIA prices).