pennsylvania frost dates, county by county.

Adams County

Last spring: 04-07 · First fall: 11-01

Allegheny County

Last spring: 04-12 · First fall: 11-05

Armstrong County

Last spring: 04-23 · First fall: 10-28

Beaver County

Last spring: 04-17 · First fall: 11-04

Bedford County

Last spring: 04-13 · First fall: 10-27

Berks County

Last spring: 03-30 · First fall: 11-11

Blair County

Last spring: 04-12 · First fall: 11-01

Bradford County

Last spring: 04-21 · First fall: 10-30

Bucks County

Last spring: 04-02 · First fall: 11-10

Butler County

Last spring: 04-26 · First fall: 10-27

Cambria County

Last spring: 05-04 · First fall: 10-13

Cameron County

Last spring: 04-27 · First fall: 10-28

Carbon County

Last spring: 04-07 · First fall: 11-04

Centre County

Last spring: 04-08 · First fall: 11-05

Chester County

Last spring: 04-03 · First fall: 11-06

Clarion County

Last spring: 04-29 · First fall: 10-24

Clearfield County

Last spring: 04-23 · First fall: 10-27

Clinton County

Last spring: 04-18 · First fall: 11-02

Columbia County

Last spring: 04-22 · First fall: 10-24

Crawford County

Last spring: 04-18 · First fall: 11-04

Cumberland County

Last spring: 04-10 · First fall: 11-01

Dauphin County

Last spring: 04-18 · First fall: 10-30

Delaware County

Last spring: 03-20 · First fall: 11-28

Elk County

Last spring: 05-01 · First fall: 10-25

Erie County

Last spring: 04-11 · First fall: 11-16

Fayette County

Last spring: 04-17 · First fall: 10-28

Forest County

Last spring: 04-20 · First fall: 11-04

Franklin County

Last spring: 04-04 · First fall: 11-06

Fulton County

Last spring: 04-12 · First fall: 10-29

Greene County

Last spring: 04-22 · First fall: 10-25

Huntingdon County

Last spring: 04-06 · First fall: 11-09

Indiana County

Last spring: 04-27 · First fall: 10-25

Jefferson County

Last spring: 04-24 · First fall: 10-28

Juniata County

Last spring: 04-06 · First fall: 11-05

Lackawanna County

Last spring: 04-10 · First fall: 11-03

Lancaster County

Last spring: 04-05 · First fall: 11-04

Lawrence County

Last spring: 04-20 · First fall: 11-02

Lebanon County

Last spring: 04-04 · First fall: 11-05

Lehigh County

Last spring: 04-05 · First fall: 11-04

Luzerne County

Last spring: 04-24 · First fall: 10-19

Lycoming County

Last spring: 04-10 · First fall: 11-04

McKean County

Last spring: 05-03 · First fall: 10-14

Mercer County

Last spring: 05-03 · First fall: 10-13

Mifflin County

Last spring: 04-06 · First fall: 11-05

Monroe County

Last spring: 04-25 · First fall: 10-21

Montgomery County

Last spring: 04-10 · First fall: 10-27

Montour County

Last spring: 04-14 · First fall: 11-01

Northampton County

Last spring: 04-04 · First fall: 11-04

Northumberland County

Last spring: 04-14 · First fall: 10-26

Perry County

Last spring: 04-03 · First fall: 11-09

Philadelphia County

Last spring: 03-17 · First fall: 11-29

Pike County

Last spring: 04-29 · First fall: 10-16

Potter County

Last spring: 05-02 · First fall: 10-17

Schuylkill County

Last spring: 04-16 · First fall: 11-01

Snyder County

Last spring: 04-10 · First fall: 11-01

Somerset County

Last spring: 04-22 · First fall: 10-28

Sullivan County

Last spring: 04-27 · First fall: 10-20

Susquehanna County

Last spring: 05-02 · First fall: 10-15

Tioga County

Last spring: 04-28 · First fall: 10-17

Union County

Last spring: 04-12 · First fall: 11-02

Venango County

Last spring: 04-21 · First fall: 11-03

Warren County

Last spring: 05-08 · First fall: 10-11

Washington County

Last spring: 04-11 · First fall: 11-02

Wayne County

Last spring: 05-03 · First fall: 10-12

Westmoreland County

Last spring: 04-20 · First fall: 10-24

Wyoming County

Last spring: 04-10 · First fall: 11-03

York County

Last spring: 04-08 · First fall: 10-31