Pennsylvania frost dates: P
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Palm | Apr 26 | Oct 17 | 174 d | 7a |
| Palmerton | Apr 21 | Oct 23 | 185 d | 6b |
| Palmyra | Apr 20 | Oct 25 | 188 d | 7a |
| Paoli | Apr 18 | Oct 27 | 192 d | 7a |
| Paradise | Apr 14 | Nov 1 | 201 d | 7a |
| Parker | May 9 | Oct 11 | 155 d | 6a |
| Parker Ford | Apr 20 | Oct 23 | 186 d | 7a |
| Parkesburg | Apr 19 | Oct 25 | 189 d | 7a |
| Parkhill | Apr 29 | Oct 21 | 175 d | 6b |
| Parryville | Apr 21 | Oct 23 | 185 d | 6b |
| Patton | May 10 | Oct 5 | 148 d | 6a |
| Paupack | May 10 | Oct 4 | 147 d | 6a |
| Paxinos | Apr 27 | Oct 20 | 176 d | 6b |
| Paxtonville | Apr 25 | Oct 19 | 177 d | 6b |
| Peach Bottom | Apr 26 | Oct 22 | 179 d | 7a |
| Peach Glen | Apr 15 | Oct 27 | 195 d | 7a |
| Peckville | Apr 23 | Oct 20 | 180 d | 6b |
| Pen Argyl | Apr 30 | Oct 18 | 171 d | 6b |
| Penfield | May 4 | Oct 11 | 160 d | 6a |
| Penn | Apr 22 | Oct 25 | 186 d | 6b |
| Penn Run | May 8 | Oct 13 | 158 d | 6b |
| Penns Creek | Apr 25 | Oct 19 | 177 d | 6b |
| Penns Park | Apr 16 | Oct 19 | 186 d | 7a |
| Pennsburg | Apr 26 | Oct 17 | 174 d | 7a |
| Pennsylvania Furnace | Apr 20 | Oct 26 | 189 d | 6b |
| Penryn | Apr 19 | Oct 24 | 188 d | 7a |
| Pequea | Apr 1 | Nov 10 | 223 d | 7a |
| Perkasie | Apr 26 | Oct 17 | 174 d | 7a |
| Perkiomenville | Apr 20 | Oct 23 | 186 d | 7a |
| Perryopolis | Apr 27 | Oct 22 | 178 d | 6b |
| Petersburg | Apr 20 | Oct 26 | 189 d | 6b |
| Petrolia | May 7 | Oct 14 | 160 d | 6a |
| Philadelphia | Mar 30 | Nov 17 | 232 d | 7b |
| Philipsburg | May 13 | Oct 1 | 141 d | 6a |
| Phoenixville | Apr 18 | Oct 27 | 192 d | 7a |
| Picture Rocks | Apr 24 | Oct 23 | 182 d | 6b |
| Pillow | Apr 25 | Oct 22 | 180 d | 6b |
| Pine Forge | Apr 20 | Oct 23 | 186 d | 7a |
| Pine Grove | Apr 16 | Oct 25 | 192 d | 7a |
| Pine Grove Mills | Apr 20 | Oct 26 | 189 d | 6b |
| Pineville | Apr 16 | Oct 19 | 186 d | 7a |
| Pipersville | Apr 13 | Oct 30 | 200 d | 7a |
| Pitcairn | Apr 22 | Oct 25 | 186 d | 6b |
| Pitman | Apr 27 | Oct 20 | 176 d | 6b |
| Pittsburgh | Apr 24 | Oct 27 | 186 d | 6b |
| Pittsfield | May 22 | Sep 30 | 131 d | 6a |
| Pittston | Apr 23 | Oct 20 | 180 d | 6b |
| Plainfield | Apr 23 | Oct 18 | 178 d | 7a |
| Pleasant Hall | Apr 19 | Oct 24 | 188 d | 7a |
| Pleasant Mount | May 14 | Oct 1 | 140 d | 5b |
| Pleasant Unity | May 1 | Oct 13 | 165 d | 6b |
| Pleasantville | May 12 | Oct 10 | 151 d | 6a |
| Plumsteadville | Apr 13 | Oct 30 | 200 d | 7a |
| Plumville | May 10 | Oct 12 | 155 d | 6a |
| Plymouth | Apr 23 | Oct 20 | 180 d | 6b |
| Plymouth Meeting | Apr 8 | Oct 31 | 206 d | 7b |
| Pocono Lake | May 7 | Oct 6 | 152 d | 6a |
| Pocono Lake Preserve | May 1 | Oct 12 | 164 d | 6a |
| Pocono Manor | May 6 | Oct 8 | 155 d | 6a |
| Pocono Pines | May 6 | Oct 8 | 155 d | 6a |
| Pocono Summit | May 6 | Oct 8 | 155 d | 6a |
| Pocopson | Apr 26 | Oct 18 | 175 d | 7a |
| Point Marion | Apr 30 | Oct 23 | 176 d | 6b |
| Point Pleasant | Apr 13 | Oct 30 | 200 d | 7a |
| Polk | May 2 | Oct 23 | 174 d | 6a |
| Pomeroy | Apr 19 | Oct 25 | 189 d | 7a |
| Port Allegany | May 15 | Oct 6 | 144 d | 5b |
| Port Carbon | Apr 30 | Oct 22 | 175 d | 6b |
| Port Clinton | Apr 16 | Oct 25 | 192 d | 7a |
| Port Matilda | May 13 | Oct 1 | 141 d | 6b |
| Port Royal | Apr 21 | Oct 24 | 186 d | 7a |
| Port Trevorton | Apr 25 | Oct 22 | 180 d | 6b |
| Portage | May 17 | Oct 2 | 138 d | 6a |
| Porters Sideling | Apr 27 | Oct 18 | 174 d | 7a |
| Portersville | May 7 | Oct 14 | 160 d | 6a |
| Portland | Apr 30 | Oct 18 | 171 d | 6b |
| Pottersdale | May 21 | Sep 27 | 129 d | 6a |
| Potts Grove | Apr 26 | Oct 20 | 177 d | 6b |
| Pottstown | Apr 20 | Oct 23 | 186 d | 7a |
| Pottsville | Apr 30 | Oct 22 | 175 d | 6b |
| Poyntelle | May 14 | Oct 1 | 140 d | 5b |
| Presto | Apr 24 | Oct 27 | 186 d | 6b |
| Preston Park | May 14 | Oct 1 | 140 d | 5b |
| Pricedale | Apr 27 | Oct 22 | 178 d | 6b |
| Prompton | May 10 | Oct 4 | 147 d | 6a |
| Prospect | May 7 | Oct 14 | 160 d | 6a |
| Prospect Park | Apr 2 | Nov 10 | 222 d | 7b |
| Prosperity | May 3 | Oct 15 | 165 d | 6a |
| Pulaski | Apr 30 | Oct 23 | 176 d | 6a |
| Punxsutawney | May 6 | Oct 14 | 161 d | 6a |