Massachusetts frost dates by county and ZIP code

Snowy hills of the Berkshires at dusk, Massachusetts — Photo: Berkshires in Winter.jpg : BenFrantzDale derivative work: So Why, CC BY-SA 2.5, via Wikimedia Commons

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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