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New Hampshire: first snow, freeze dates and white Christmas odds
Snow and freeze history for 3 NOAA weather stations in New Hampshire, computed from 1995–2024 daily records. The earliest typical first snow among them is Mount Washington (median Sep 19). The best white Christmas odds are at Mount Washington (97%).
| City | First measurable snow (median) | First 1"+ snow (median) | White Christmas chance | Avg snowfall / season | First fall freeze (median) | Last spring freeze (median) |
|---|---|---|---|---|---|---|
| Concord | Nov 20 | Dec 4 | 52% | 66.0" | Oct 2 | May 13 |
| Manchester | – | – | – | – | Oct 18 | Apr 20 |
| Mount Washington | Sep 19 | Oct 9 | 97% | 285.1" | Aug 30 | Jun 20 |
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