Frost dates · Pennsylvania
Pennsylvania 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.
Warren County
Spring May 8·Fall Oct 11156-day season
Cambria County
Spring May 4·Fall Oct 13162-day season
McKean County
Spring May 3·Fall Oct 14164-day season
Mercer County
Spring May 3·Fall Oct 13163-day season
Wayne County
Spring May 3·Fall Oct 12162-day season
Potter County
Spring May 2·Fall Oct 17168-day season
Susquehanna County
Spring May 2·Fall Oct 15166-day season
Elk County
Spring May 1·Fall Oct 25177-day season
Clarion County
Spring Apr 29·Fall Oct 24178-day season
Pike County
Spring Apr 29·Fall Oct 16170-day season
Tioga County
Spring Apr 28·Fall Oct 17172-day season
Cameron County
Spring Apr 27·Fall Oct 28184-day season
Indiana County
Spring Apr 27·Fall Oct 25181-day season
Sullivan County
Spring Apr 27·Fall Oct 20176-day season
Butler County
Spring Apr 26·Fall Oct 27184-day season
Monroe County
Spring Apr 25·Fall Oct 21179-day season
Jefferson County
Spring Apr 24·Fall Oct 28187-day season
Luzerne County
Spring Apr 24·Fall Oct 19178-day season
Armstrong County
Spring Apr 23·Fall Oct 28188-day season
Clearfield County
Spring Apr 23·Fall Oct 27187-day season
Columbia County
Spring Apr 22·Fall Oct 24185-day season
Greene County
Spring Apr 22·Fall Oct 25186-day season
Somerset County
Spring Apr 22·Fall Oct 28189-day season
Bradford County
Spring Apr 21·Fall Oct 30192-day season
Venango County
Spring Apr 21·Fall Nov 3196-day season
Forest County
Spring Apr 20·Fall Nov 4198-day season
Lawrence County
Spring Apr 20·Fall Nov 2196-day season
Westmoreland County
Spring Apr 20·Fall Oct 24187-day season
Clinton County
Spring Apr 18·Fall Nov 2198-day season
Crawford County
Spring Apr 18·Fall Nov 4200-day season
Dauphin County
Spring Apr 18·Fall Oct 30195-day season
Beaver County
Spring Apr 17·Fall Nov 4201-day season
Fayette County
Spring Apr 17·Fall Oct 28194-day season
Schuylkill County
Spring Apr 16·Fall Nov 1199-day season
Montour County
Spring Apr 14·Fall Nov 1201-day season
Northumberland County
Spring Apr 14·Fall Oct 26195-day season
Bedford County
Spring Apr 13·Fall Oct 27197-day season
Allegheny County
Spring Apr 12·Fall Nov 5207-day season
Blair County
Spring Apr 12·Fall Nov 1203-day season
Fulton County
Spring Apr 12·Fall Oct 29200-day season
Union County
Spring Apr 12·Fall Nov 2204-day season
Erie County
Spring Apr 11·Fall Nov 16219-day season
Washington County
Spring Apr 11·Fall Nov 2205-day season
Cumberland County
Spring Apr 10·Fall Nov 1205-day season
Lackawanna County
Spring Apr 10·Fall Nov 3207-day season
Lycoming County
Spring Apr 10·Fall Nov 4208-day season
Montgomery County
Spring Apr 10·Fall Oct 27200-day season
Snyder County
Spring Apr 10·Fall Nov 1205-day season
Wyoming County
Spring Apr 10·Fall Nov 3207-day season
Centre County
Spring Apr 8·Fall Nov 5211-day season
York County
Spring Apr 8·Fall Oct 31206-day season
Adams County
Spring Apr 7·Fall Nov 1208-day season
Carbon County
Spring Apr 7·Fall Nov 4211-day season
Huntingdon County
Spring Apr 6·Fall Nov 9217-day season
Juniata County
Spring Apr 6·Fall Nov 5213-day season
Mifflin County
Spring Apr 6·Fall Nov 5213-day season
Lancaster County
Spring Apr 5·Fall Nov 4213-day season
Lehigh County
Spring Apr 5·Fall Nov 4213-day season
Franklin County
Spring Apr 4·Fall Nov 6216-day season
Lebanon County
Spring Apr 4·Fall Nov 5215-day season
Northampton County
Spring Apr 4·Fall Nov 4214-day season
Chester County
Spring Apr 3·Fall Nov 6217-day season
Perry County
Spring Apr 3·Fall Nov 9220-day season
Bucks County
Spring Apr 2·Fall Nov 10222-day season
Berks County
Spring Mar 30·Fall Nov 11226-day season
Delaware County
Spring Mar 20·Fall Nov 28253-day season
Philadelphia County
Spring Mar 17·Fall Nov 29257-day season
Alphabetical · A to Z
- Adams County
- Allegheny County
- Armstrong County
- Beaver County
- Bedford County
- Berks County
- Blair County
- Bradford County
- Bucks County
- Butler County
- Cambria County
- Cameron County
- Carbon County
- Centre County
- Chester County
- Clarion County
- Clearfield County
- Clinton County
- Columbia County
- Crawford County
- Cumberland County
- Dauphin County
- Delaware County
- Elk County
- Erie County
- Fayette County
- Forest County
- Franklin County
- Fulton County
- Greene County
- Huntingdon County
- Indiana County
- Jefferson County
- Juniata County
- Lackawanna County
- Lancaster County
- Lawrence County
- Lebanon County
- Lehigh County
- Luzerne County
- Lycoming County
- McKean County
- Mercer County
- Mifflin County
- Monroe County
- Montgomery County
- Montour County
- Northampton County
- Northumberland County
- Perry County
- Philadelphia County
- Pike County
- Potter County
- Schuylkill County
- Snyder County
- Somerset County
- Sullivan County
- Susquehanna County
- Tioga County
- Union County
- Venango County
- Warren County
- Washington County
- Wayne County
- Westmoreland County
- Wyoming County
- York County