Frost dates · Massachusetts

Massachusetts frost dates,
county by county.

Last spring frost and first fall frost probability data for all 14 counties in Massachusetts, computed from the NOAA 1991–2020 Climate Normals. Every county page surfaces the full probability table at three temperature thresholds plus crop-specific planting guidance.

Variation across Massachusetts

30 days separate the earliest and latest counties.

The median last spring frost in Suffolk County is March 28 — 30 days earlier than Berkshire County at April 27. Statewide averages aren't useful planting tools; pick your county below for the data that actually applies to your fields.

By geography

Massachusetts counties on the map.

Each dot is a county. Click for full frost-date detail. Color shows last-spring-frost timing — sage = earliest, amber = latest.

List Map

Last spring frostEarliestMedianLatest

14 counties · click any county for full frost data

Alphabetical

All Massachusetts counties — A to Z.

Frost dates set the calendar. Bield: Farm runs it.

Pair these dates with live forecasts for your specific farm location. Bield: Farm logs your soil tests, planting dates, weather, and yield outcomes year over year.

Download Bield: Farm

Massachusetts frost dates,county by county.

30 days separate the earliest and latest counties.

Massachusetts counties on the map.

All Massachusetts counties — A to Z.

Frost dates set the calendar. Bield: Farm runs it.

Massachusetts frost dates,
county by county.