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Wyoming: first snow, freeze dates and white Christmas odds
Snow and freeze history for 3 NOAA weather stations in Wyoming, computed from 1995–2024 daily records. The earliest typical first snow among them is Cheyenne (median Oct 9). The best white Christmas odds are at Cheyenne (33%).
| City | First measurable snow (median) | First 1"+ snow (median) | White Christmas chance | Avg snowfall / season | First fall freeze (median) | Last spring freeze (median) |
|---|---|---|---|---|---|---|
| Casper | Oct 5 | Oct 9 | – | 73.2" | Sep 20 | May 25 |
| Cheyenne | Oct 9 | Oct 13 | 33% | 62.2" | Oct 4 | May 13 |
| Lander | Oct 7 | Oct 9 | – | 83.8" | Sep 30 | May 15 |
Planning for winter? Heat pump vs gas furnace, propane and oil: heating cost in Wyoming (on our sister site PlugVsPump, from EIA prices).