Pennsylvania climate

Pennsylvania Frost Dates

The median last spring freeze and first fall freeze (32°F) at 160 NOAA stations in Pennsylvania, 1991-2020, with the growing season between them.

Every station

A median date has an even chance of a later freeze in spring or an earlier one in fall. Each town page gives the dates at 36, 32 and 28°F and every probability from 10 to 90 percent.

StationElevationLast freezeFirst freezeSeason, daysTown page
Acmetonia Lock 3748 ftApril 16November 1199Cheswick
Allentown Intl AP390 ftApril 20October 24187Catasauqua
Altoona 3 W1,320 ftApril 25October 21179Altoona
Altoona 7 Sw1,180 ftApril 25October 20178Duncansville
Altoona Blair CO AP1,480 ftApril 23October 21181Martinsburg
Alvin R Bush Dam930 ftApril 29October 21175Renovo
Avondale 2 N400 ftApril 19October 26190Upland
Bear Gap1,015 ftApril 27October 20176Marion Heights
Beaver Falls 1 Ne760 ftApril 27October 25181Beaver Falls
Benton 3 Ne1,095 ftMay 4October 11160Benton
Biglerville720 ftApril 15October 27195Biglerville
Bloserville 1 N700 ftApril 18October 26191Newville
Blue Marsh Lake350 ftApril 26October 19176Spring Ridge
Braddock Lock 2730 ftApril 5November 10219Duquesne
Bradford 4SW Rsch 51,660 ftMay 18October 4139Lewis Run
Bradford Rgnl AP2,117 ftMay 18October 1136Lewis Run
Bucksville387 ftApril 29October 16170Bedminster
Butler 2 Sw1,000 ftMay 7October 14160Oak Hills
Canton1,140 ftMay 16October 2139Canton
Carlisle Wtp430 ftApril 23October 18178Schlusser
Cashtown 1S710 ftApril 28October 17172Arendtsville
Chalk Hill 2 Ene1,980 ftMay 19October 1135Farmington
Chambersburg 1 Ese640 ftApril 18October 25190Chambersburg
Chandlers Valley 1SE1,490 ftMay 22September 30131Sugar Grove
Charleroi Lock 4749 ftApril 13November 5206Monessen
Clarence1,390 ftMay 21September 27129Clarence
Clarion 3 Sw1,040 ftMay 9October 11155Clarion
Clearfield Lawrence AP1,516 ftMay 4October 11160Plymptonville
Clermont 1 Nw2,080 ftMay 15October 3141Mount Jewett
Coatesville 2 W640 ftApril 19October 25189Westwood
Confluence 1 Sw Dam1,490 ftApril 30October 18171Confluence
Connellsville 2 Ssw900 ftApril 22October 27188South Connellsville
Cooksburg 2 Nw1,450 ftMay 13October 7147Marienville
Coudersport 1 Sw1,650 ftMay 22October 1132Coudersport
Coudersport 7SE2,150 ftMay 14October 4143Coudersport
Cowanesque Dam1,150 ftMay 9October 12156Lawrenceville
Dehart Dam537 ftMay 1October 16168Elizabethville
Donegal 2 Nw1,800 ftApril 30October 17170Acme
Donora 1 Sw762 ftApril 27October 22178Donora
Doylestown AP394 ftApril 13October 30200Doylestown
Dubois Jefferson CO AP1,814 ftMay 6October 14161Falls Creek
Dushore1,530 ftMay 14October 2141Dushore
E Stroudsburg471 ftMay 1October 12164East Stroudsburg
Ebensburg Sewage Plt1,940 ftMay 17October 2138Ebensburg
Eisenhower Nhs540 ftApril 24October 21180Gettysburg
Emporium1,040 ftMay 7October 15161Emporium
Emsworth L/d Ohio Rvr717 ftApril 24October 27186Ben Avon
Erie Intl AP730 ftApril 26November 4192Fairview
Everett1,000 ftApril 27October 17173Everett
Ford City 4 S Dam930 ftMay 4October 16165Lenape Heights
Francis E Walter Dam1,509 ftMay 7October 6152Pocono Mountain Lake Estates
Franklin1,015 ftMay 2October 23174Franklin
Glen Hazel 2 Ne Dam1,720 ftMay 14October 6145Johnsonburg
Glenmoore500 ftApril 11November 1204Eagleview
Glenwillard Dashields L&d710 ftApril 8November 8214Edgeworth
Grampian 1E1,510 ftMay 4October 13162Curwensville
Graterford 1 E279 ftApril 24October 15174Skippack
Grays Landing800 ftApril 28October 21176Point Marion
Hamburg369 ftApril 16October 25192Hamburg
Hanover 4 Sw558 ftApril 24October 20179Pennville
Harrisburg 1 Ne420 ftApril 15October 23191Harrisburg
Harrisburg Cptl Cy AP340 ftApril 9November 1206New Market
Hawley 1 E890 ftMay 10October 4147Hawley
Hidden Valley2,876 ftMay 2October 17168Somerset
Hopewell Morgantown550 ftApril 16October 27194Morgantown
Indiana 3 Se1,102 ftMay 8October 13158Indiana
Jamestown 2 Nw1,040 ftMay 4October 14163Jamestown
Johnstown Cambria CO AP2,284 ftApril 29October 21175Geistown
Kane 1NNE1,750 ftMay 24September 28127Kane
Lancaster 2NE Fltr Plt270 ftApril 19October 24188Lancaster
Lancaster AP403 ftApril 18October 25190Lititz
Landisville 2 Nw360 ftApril 30October 10163Salunga
Laporte1,966 ftMay 6October 7154Laporte
Laurel Mtn2,760 ftApril 26October 17174Ligonier
Laurel Summit2,730 ftMay 6October 12159Jennerstown
Laurelton Ctr800 ftApril 25October 19177Mifflinburg
Lebanon 2 W450 ftApril 20October 25188Cleona
Lehighton 1SSW455 ftApril 21October 23185Weissport East
Lewisburg500 ftApril 26October 20177Lewisburg
Lewistown460 ftApril 21October 24186Juniata Terrace
Linesville 1 S1,030 ftApril 30October 23176Linesville
Lock Haven Sewage Plt566 ftApril 30October 20173Castanea
Loyalhanna Lake990 ftMay 2October 14165Saltsburg
Mahanoy City 2 N1,710 ftApril 30October 22175Mahanoy City
Marcus Hook10 ftMarch 30November 16231Linwood
Matamoras459 ftMay 2October 12163
Mckeesport740 ftMay 2October 20171Port Vue
Mercer1,220 ftMay 15October 3141Mercer
Meyersdale 2 Ssw2,000 ftMay 12October 5146Meyersdale
Middletown Harrisburg Intl AP312 ftApril 9November 2207Middletown
Milanville760 ftMay 3October 9159Masthope
Millheim1,120 ftMay 5October 6154Millheim
Montgomery L&d690 ftApril 28October 26181Industry
Montrose1,420 ftMay 14October 2141Montrose
Moon Twp1,172 ftApril 28October 18173Carnot-Moon
Mt Pleasant1,003 ftMay 1October 13165Norvelt
Mt Pocono Mountains AP1,916 ftMay 6October 8155Mount Pocono
Murrysville 2 Sw860 ftApril 22October 25186Level Green
Natrona Lock 4760 ftApril 16November 2200Natrona Heights
Neshaminy Falls40 ftApril 21October 25187Trevose
New Castle 1 N825 ftApril 30October 23176New Castle Northwest
New Holland 2 Se605 ftApril 14November 1201New Holland
Norristown62 ftApril 8October 31206Bridgeport
Octoraro Lake260 ftApril 26October 22179Oxford
Oswayo 1 Ene1,710 ftMay 20September 29132
Phila Franklin Inst60 ftMarch 30November 17232Logan Square
Philadelphia Intl AP10 ftApril 2November 10222Eastwick
Philadelphia Ne AP100 ftApril 4November 7217Bustleton
Philipsburg 2 S1,720 ftMay 13October 1141Chester Hill
Phoenixville 1 E85 ftApril 18October 27192Phoenixville
Pittsburgh Allegheny CO AP1,248 ftApril 18October 28193Dravosburg
Pittsburgh Intl AP1,203 ftApril 23October 23183Enlow
Pleasant Mt 1 W1,800 ftMay 14October 1140Forest City
Port Allegany1,475 ftMay 15October 6144Port Allegany
Port Meadville AP1,400 ftApril 30October 23176Fredericksburg
Pottstown Limerick AP291 ftApril 20October 23186Limerick
Prince Gallitzin SP1,520 ftMay 10October 5148Patton
Pt Marion Lock 8810 ftApril 30October 23176Point Marion
Putneyville 2 Se Dam1,280 ftMay 10October 12155Dayton
Raystown Hq995 ftApril 19October 29193McConnellstown
Raystown Lake 21,000 ftApril 19October 28192McConnellstown
Reading 4 Nnw360 ftApril 10October 31204Temple
Reading Spaatz Fld341 ftApril 14October 29198Greenfields
Rector 3 Ssw1,330 ftMay 5October 6154Ligonier
Renovo660 ftApril 30October 22175Renovo
Ridgway1,360 ftMay 13October 11151Ridgway
Rodale Rsch Ctr550 ftApril 26October 14171Topton
S Mtn1,520 ftApril 27October 20176Mont Alto
Safe Harbor Dam195 ftApril 1November 10223Conestoga
Salina 3 W1,109 ftApril 29October 20174Avonmore
Schenley Lock 5783 ftApril 21October 30192Freeport
Selinsgrove 2 S420 ftApril 25October 22180Selinsgrove
Selinsgrove Penn Vly AP444 ftApril 27October 16172Selinsgrove
Sellersville302 ftApril 26October 17174Sellersville
Shawnee SP1,275 ftMay 4October 10159Bedford
Shippensburg680 ftApril 19October 24188Shippensburg
Slippery Rock 1 Ssw1,260 ftMay 7October 14160Slippery Rock
Springboro 3 Wnw1,005 ftMay 8October 16161Conneautville
Springtown 1 Nne860 ftApril 21October 22184Hellertown
State College1,170 ftApril 20October 26189State College
Stevenson Dam932 ftMay 10October 16159Emporium
Sunbury575 ftApril 30October 13166Sunbury
Tioga Hammond Dam1,230 ftMay 6October 10157Tioga
Tionesta 2 Se Lake1,200 ftMay 1October 25177Tionesta
Titusville Wtr Wks1,220 ftMay 12October 10151Titusville
Towanda 1 S760 ftMay 2October 15166Towanda
Union City Filtration Plant1,400 ftMay 7October 10156Union City
Uniontown 1 Ne956 ftApril 30October 18171Oliver
W Chester 2 Nw375 ftApril 26October 18175West Chester
Warren1,210 ftMay 4October 21170Warren
Washington 3 Ne1,300 ftApril 24October 23182East Washington
Waynesburg 1 E940 ftMay 3October 15165Morrisville
Wellsboro 4 Sw1,818 ftMay 10October 5148Wellsboro
Wilkes-Barre Intl AP930 ftApril 23October 20180Avoca
Williamsport520 ftApril 24October 23182Montoursville
Williamsport 2525 ftApril 25October 24182Faxon
Willow Grove Nas361 ftApril 11November 1204Horsham
Wolfsburg1,185 ftApril 29October 13167Bedford
York 3 Ssw Pump Stn390 ftApril 26October 19176Grantley
York AP486 ftApril 27October 18174Spring Grove

Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal freeze probabilities. Public domain.