Frost dates · Maryland

Maryland frost dates,
county by county.

Last spring frost and first fall frost probability data for all 24 counties in Maryland, 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 Maryland

45 days separate the earliest and latest counties.

The median last spring frost in Baltimore city is March 11 — 45 days earlier than Garrett County at April 25. Statewide averages aren't useful planting tools; pick your county below for the data that actually applies to your fields.

By frost timing

Counties sorted by last spring frost.

Latest at top, earliest at bottom. In most states this matches the north-to-south gradient.

List Map

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

Maryland frost dates,county by county.

45 days separate the earliest and latest counties.

Counties sorted by last spring frost.

All Maryland counties — A to Z.

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

Maryland frost dates,
county by county.