Massachusetts frost dates by county and ZIP code
Across 539 Massachusetts ZIP codes the average last spring frost runs Apr 4 to May 17 and the average first fall frost Oct 1 to Nov 11 (50% odds, 32°F, NOAA 1991–2020 normals), with USDA hardiness zones. Download the table as CSV.
Counties
- Barnstable
- Berkshire
- Bristol
- Dukes
- Essex
- Franklin
- Hampden
- Hampshire
- Middlesex
- Nantucket
- Norfolk
- Plymouth
- Suffolk
- Worcester
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