Pennsylvania frost dates: N
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Nanticoke | May 7 | Oct 6 | 152 d | 6b |
| Nanty Glo | May 17 | Oct 2 | 138 d | 6a |
| Narberth | Mar 30 | Nov 17 | 232 d | 7b |
| Narvon | Apr 16 | Oct 27 | 194 d | 7a |
| Natrona Heights | Apr 16 | Nov 2 | 200 d | 6b |
| Nazareth | Apr 18 | Oct 25 | 190 d | 7a |
| Needmore | Apr 27 | Oct 17 | 173 d | 7a |
| Neelyton | Apr 18 | Oct 25 | 190 d | 7a |
| Neffs | Apr 20 | Oct 24 | 187 d | 6b |
| Nelson | May 9 | Oct 12 | 156 d | 5b |
| Nemacolin | Apr 28 | Oct 21 | 176 d | 7a |
| Nescopeck | May 4 | Oct 11 | 160 d | 6b |
| Nesquehoning | Apr 21 | Oct 23 | 185 d | 6b |
| New Albany | May 14 | Oct 2 | 141 d | 6a |
| New Alexandria | May 2 | Oct 14 | 165 d | 6b |
| New Baltimore | May 4 | Oct 10 | 159 d | 6b |
| New Bedford | Apr 30 | Oct 23 | 176 d | 6a |
| New Berlin | Apr 26 | Oct 20 | 177 d | 6b |
| New Berlinville | Apr 20 | Oct 23 | 186 d | 7a |
| New Bethlehem | May 10 | Oct 12 | 155 d | 6a |
| New Bloomfield | Apr 23 | Oct 18 | 178 d | 7a |
| New Brighton | Apr 27 | Oct 25 | 181 d | 6b |
| New Buffalo | May 1 | Oct 16 | 168 d | 7a |
| New Castle | Apr 30 | Oct 23 | 176 d | 6a |
| New Columbia | Apr 26 | Oct 20 | 177 d | 6b |
| New Cumberland | Apr 9 | Nov 1 | 206 d | 7a |
| New Derry | May 2 | Oct 14 | 165 d | 6b |
| New Eagle | Apr 13 | Nov 5 | 206 d | 6b |
| New Enterprise | Apr 23 | Oct 21 | 181 d | 6b |
| New Florence | Apr 26 | Oct 17 | 174 d | 6b |
| New Freedom | Apr 19 | Oct 25 | 189 d | 7a |
| New Freeport | May 4 | Oct 12 | 161 d | 6a |
| New Galilee | Apr 27 | Oct 25 | 181 d | 6b |
| New Geneva | Apr 28 | Oct 21 | 176 d | 6b |
| New Germantown | Apr 18 | Oct 26 | 191 d | 7a |
| New Holland | Apr 14 | Nov 1 | 201 d | 7a |
| New Hope | Apr 16 | Oct 19 | 186 d | 7a |
| New Kensington | Apr 16 | Nov 2 | 200 d | 6b |
| New Kingstown | Apr 23 | Oct 18 | 178 d | 7a |
| New London | Apr 7 | Nov 2 | 209 d | 7a |
| New Milford | May 14 | Oct 2 | 141 d | 5b |
| New Millport | May 4 | Oct 13 | 162 d | 6a |
| New Oxford | Apr 24 | Oct 20 | 179 d | 7a |
| New Paris | May 4 | Oct 10 | 159 d | 6b |
| New Park | Apr 1 | Nov 10 | 223 d | 7a |
| New Philadelphia | Apr 30 | Oct 22 | 175 d | 6b |
| New Providence | Apr 1 | Nov 10 | 223 d | 7a |
| New Ringgold | Apr 16 | Oct 25 | 192 d | 6b |
| New Salem | Apr 30 | Oct 18 | 171 d | 6b |
| New Stanton | May 1 | Oct 13 | 165 d | 6b |
| New Tripoli | Apr 26 | Oct 14 | 171 d | 6b |
| New Wilmington | Apr 30 | Oct 23 | 176 d | 6a |
| Newburg | Apr 19 | Oct 24 | 188 d | 7a |
| Newell | Apr 13 | Nov 5 | 206 d | 6b |
| Newfoundland | May 6 | Oct 8 | 155 d | 6a |
| Newmanstown | Apr 26 | Oct 19 | 176 d | 7a |
| Newport | Apr 23 | Oct 18 | 178 d | 7a |
| Newry | Apr 25 | Oct 20 | 178 d | 6b |
| Newton Hamilton | Apr 19 | Oct 28 | 192 d | 7a |
| Newtown | Apr 16 | Oct 19 | 186 d | 7a |
| Newtown Square | Apr 8 | Oct 31 | 206 d | 7a |
| Newville | Apr 18 | Oct 26 | 191 d | 7a |
| Nicholson | May 14 | Oct 2 | 141 d | 6a |
| Nicktown | May 17 | Oct 2 | 138 d | 6a |
| Nineveh | May 3 | Oct 15 | 165 d | 6a |
| Normalville | Apr 30 | Oct 17 | 170 d | 6a |
| Norristown | Apr 8 | Oct 31 | 206 d | 7a |
| North Apollo | Apr 29 | Oct 20 | 174 d | 6b |
| North Bend | Apr 30 | Oct 22 | 175 d | 6a |
| North East | Apr 21 | Nov 5 | 198 d | 6a |
| North Springfield | May 8 | Oct 16 | 161 d | 7a |
| North Versailles | Apr 5 | Nov 10 | 219 d | 6b |
| North Wales | Apr 11 | Nov 1 | 204 d | 7a |
| North Washington | May 7 | Oct 14 | 160 d | 6a |
| Northampton | Apr 20 | Oct 24 | 187 d | 7a |
| Northern Cambria | May 10 | Oct 5 | 148 d | 6a |
| Northpoint | May 10 | Oct 12 | 155 d | 6a |
| Northumberland | Apr 30 | Oct 13 | 166 d | 6b |
| Norvelt | May 1 | Oct 13 | 165 d | 6b |
| Norwood | Apr 2 | Nov 10 | 222 d | 7b |
| Nottingham | Apr 26 | Oct 22 | 179 d | 7a |
| Noxen | Apr 23 | Oct 20 | 180 d | 6a |
| Nu Mine | May 4 | Oct 16 | 165 d | 6a |
| Numidia | Apr 27 | Oct 20 | 176 d | 6b |
| Nuremberg | Apr 30 | Oct 22 | 175 d | 6b |