Pennsylvania planting zones & frost dates
USDA hardiness zones in Pennsylvania go from 5b to 7b. Pick your city for its average frost dates and a planting calendar, or search by ZIP code.
| City | Zone | Avg. last frost | Avg. first frost |
|---|---|---|---|
| Abington | 7b | Apr 11 | Nov 1 |
| Allentown | 7a | Apr 20 | Oct 24 |
| Allison Park | 6b | Apr 16 | Nov 1 |
| Altoona | 6b | Apr 25 | Oct 21 |
| Ardmore | 7b | Mar 30 | Nov 17 |
| Back Mountain | 6a | Apr 23 | Oct 20 |
| Baldwin | 6b | Apr 18 | Oct 28 |
| Bensalem | 7b | Apr 21 | Oct 25 |
| Berwick | 6b | May 4 | Oct 11 |
| Bethel Park | 6b | Apr 18 | Oct 28 |
| Bethlehem | 7a | Apr 20 | Oct 24 |
| Bloomsburg | 6b | Apr 27 | Oct 20 |
| Broomall | 7b | Apr 8 | Oct 31 |
| Butler | 6b | May 7 | Oct 14 |
| Carlisle | 7a | Apr 23 | Oct 18 |
| Carnot-Moon | 6b | Apr 28 | Oct 18 |
| Chambersburg | 7a | Apr 18 | Oct 25 |
| Chester | 7b | Mar 30 | Nov 16 |
| Coatesville | 7a | Apr 19 | Oct 25 |
| Colonial Park | 7a | Apr 15 | Oct 23 |
| Columbia | 7a | Apr 30 | Oct 10 |
| Cranberry Township | 6b | Apr 8 | Nov 8 |
| Darby | 7b | Apr 2 | Nov 10 |
| Drexel Hill | 7b | Apr 2 | Nov 10 |
| Dunmore | 6b | Apr 23 | Oct 20 |
| East Norriton | 7a | Apr 8 | Oct 31 |
| East Stroudsburg | 6b | May 1 | Oct 12 |
| Easton | 7a | Apr 18 | Oct 25 |
| Elizabethtown | 7a | Apr 9 | Nov 2 |
| Emmaus | 7a | Apr 20 | Oct 24 |
| Ephrata | 7a | Apr 18 | Oct 25 |
| Erie | 7a | Apr 26 | Nov 4 |
| Fernway | 6b | Apr 27 | Oct 25 |
| Franklin Park | 6b | Apr 24 | Oct 27 |
| Fullerton | 7a | Apr 20 | Oct 24 |
| Greensburg | 6b | May 1 | Oct 13 |
| Hanover | 7a | Apr 24 | Oct 20 |
| Harrisburg | 7a | Apr 15 | Oct 23 |
| Havertown | 7b | Mar 30 | Nov 17 |
| Hazleton | 6b | Apr 30 | Oct 22 |
| Hermitage | 6a | May 15 | Oct 3 |
| Hershey | 7a | Apr 9 | Nov 2 |
| Horsham | 7a | Apr 11 | Nov 1 |
| Indiana | 6b | May 8 | Oct 13 |
| Jefferson Hills | 6b | Apr 18 | Oct 28 |
| Johnstown | 6b | May 17 | Oct 2 |
| King of Prussia | 7a | Apr 8 | Oct 31 |
| Kingston | 6b | Apr 23 | Oct 20 |
| Lancaster | 7a | Apr 19 | Oct 24 |
| Landenberg | 7a | Apr 19 | Oct 26 |
| Lansdale | 7a | Apr 24 | Oct 15 |
| Lansdowne | 7b | Apr 2 | Nov 10 |
| Lebanon | 7a | Apr 20 | Oct 25 |
| Levittown | 7a | Apr 21 | Oct 25 |
| Limerick | 7a | Apr 20 | Oct 23 |
| Lower Burrell | 6b | Apr 16 | Nov 1 |
| McKeesport | 6b | May 2 | Oct 20 |
| Meadville | 6a | Apr 30 | Oct 23 |
| Monroeville | 6b | Apr 22 | Oct 25 |
| Montgomeryville | 7a | Apr 11 | Nov 1 |
| Mount Lebanon | 6b | Apr 18 | Oct 28 |
| Mountain Top | 6b | May 7 | Oct 6 |
| Munhall | 6b | Apr 5 | Nov 10 |
| Murrysville | 6b | Apr 22 | Oct 25 |
| Nanticoke | 6b | May 7 | Oct 6 |
| Natrona Heights | 6b | Apr 16 | Nov 2 |
| New Castle | 6b | Apr 30 | Oct 23 |
| New Kensington | 6b | Apr 16 | Nov 1 |
| Norristown | 7a | Apr 8 | Oct 31 |
| North Versailles | 6b | Apr 5 | Nov 10 |
| Oil City | 6a | May 2 | Oct 23 |
| Philadelphia | 7b | Mar 30 | Nov 17 |
| Phoenixville | 7a | Apr 18 | Oct 27 |
| Pittsburgh | 6b | Apr 24 | Oct 27 |
| Plum | 6b | Apr 16 | Nov 1 |
| Pottstown | 7a | Apr 20 | Oct 23 |
| Pottsville | 6b | Apr 16 | Oct 25 |
| Radnor | 7a | Apr 8 | Oct 31 |
| Reading | 7a | Apr 14 | Oct 29 |
| Saint Marys | 5b | May 14 | Oct 6 |
| Scranton | 6b | Apr 23 | Oct 20 |
| Sharon | 6a | May 1 | Oct 17 |
| Shiloh | 7a | Apr 26 | Oct 19 |
| South Park Township | 6b | Apr 18 | Oct 28 |
| Springfield | 7b | Apr 2 | Nov 10 |
| State College | 6b | Apr 20 | Oct 26 |
| Upper Saint Clair | 6b | Apr 18 | Oct 28 |
| Washington | 6b | Apr 24 | Oct 23 |
| Wayne | 7a | Apr 8 | Oct 31 |
| Waynesboro | 7a | Apr 25 | Oct 19 |
| Weigelstown | 7a | Apr 27 | Oct 18 |
| West Chester | 7a | Apr 26 | Oct 18 |
| West Mifflin | 6b | May 2 | Oct 20 |
| West Norriton | 7a | Apr 8 | Oct 31 |
| Whitehall | 6b | Apr 18 | Oct 28 |
| Whitehall Township | 7a | Apr 20 | Oct 24 |
| Wilkes-Barre | 7a | Apr 23 | Oct 20 |
| Wilkinsburg | 6b | Apr 5 | Nov 10 |
| Williamsport | 6b | Apr 25 | Oct 24 |
| Willow Grove | 7b | Apr 11 | Nov 1 |
| Wyomissing | 7a | Apr 14 | Oct 29 |
| Yeadon | 7b | Mar 30 | Nov 17 |
| York | 7a | Apr 26 | Oct 19 |
Cities with 10,000+ residents. Data: USDA Plant Hardiness Zone Map 2023 and NOAA Climate Normals 1991–2020. Sources and method.