Frost dates · Maine

Maine frost dates,
county by county.

Last spring frost and first fall frost probability data for all 16 counties in Maine, 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 Maine

29 days separate the earliest and latest counties.

The median last spring frost in Androscoggin County is April 11 — 29 days earlier than Franklin County at May 10. Statewide averages aren't useful planting tools; pick your county below for the data that actually applies to your fields.

By geography

Maine 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

16 counties · click any county for full frost data

Alphabetical

All Maine 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

Maine frost dates,county by county.

29 days separate the earliest and latest counties.

Maine counties on the map.

All Maine counties — A to Z.

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

Maine frost dates,
county by county.