Frost dates · Maryland
Maryland counties by frost timing.
Latest at top, earliest at bottom. In most states this matches the north-to-south gradient.
Sorted by spring frost
Latest → earliest.
Garrett County
Spring Apr 25·Fall Oct 24182-day season
Carroll County
Spring Apr 9·Fall Oct 31205-day season
Allegany County
Spring Apr 3·Fall Nov 3214-day season
Calvert County
Spring Apr 2·Fall Nov 6218-day season
Washington County
Spring Mar 31·Fall Nov 9223-day season
Caroline County
Spring Mar 30·Fall Nov 11226-day season
Prince George's County
Spring Mar 30·Fall Nov 10225-day season
Harford County
Spring Mar 29·Fall Nov 10226-day season
Worcester County
Spring Mar 29·Fall Nov 11227-day season
Cecil County
Spring Mar 27·Fall Nov 13231-day season
Dorchester County
Spring Mar 27·Fall Nov 17235-day season
Howard County
Spring Mar 25·Fall Nov 21241-day season
Baltimore County
Spring Mar 22·Fall Nov 20243-day season
Montgomery County
Spring Mar 22·Fall Nov 19242-day season
Frederick County
Spring Mar 21·Fall Nov 21245-day season
Kent County
Spring Mar 21·Fall Nov 17241-day season
Queen Anne's County
Spring Mar 21·Fall Nov 17241-day season
Wicomico County
Spring Mar 21·Fall Nov 21245-day season
Somerset County
Spring Mar 20·Fall Nov 24249-day season
Talbot County
Spring Mar 20·Fall Nov 20245-day season
St. Mary's County
Spring Mar 19·Fall Nov 29255-day season
Charles County
Spring Mar 17·Fall Nov 22250-day season
Anne Arundel County
Spring Mar 14·Fall Nov 28259-day season
Baltimore city
Spring Mar 11·Fall Dec 5269-day season
Alphabetical · A to Z
- Allegany County
- Anne Arundel County
- Baltimore city
- Baltimore County
- Calvert County
- Caroline County
- Carroll County
- Cecil County
- Charles County
- Dorchester County
- Frederick County
- Garrett County
- Harford County
- Howard County
- Kent County
- Montgomery County
- Prince George's County
- Queen Anne's County
- Somerset County
- St. Mary's County
- Talbot County
- Washington County
- Wicomico County
- Worcester County