Pennsylvania frost dates: H
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Hadley | Apr 30 | Oct 23 | 176 d | 6a |
| Halifax | May 1 | Oct 16 | 168 d | 6b |
| Hallstead | May 14 | Oct 2 | 141 d | 6a |
| Hamburg | Apr 16 | Oct 25 | 192 d | 7a |
| Hamilton | May 10 | Oct 12 | 155 d | 6a |
| Hamlin | May 10 | Oct 4 | 147 d | 6a |
| Hannastown | May 2 | Oct 14 | 165 d | 6b |
| Hanover | Apr 24 | Oct 20 | 179 d | 7a |
| Harborcreek | Apr 26 | Nov 4 | 192 d | 6b |
| Harford | May 14 | Oct 2 | 141 d | 6a |
| Harleigh | Apr 30 | Oct 22 | 175 d | 6b |
| Harleysville | Apr 24 | Oct 15 | 174 d | 7a |
| Harmonsburg | Apr 30 | Oct 23 | 176 d | 6a |
| Harmony | Apr 27 | Oct 25 | 181 d | 6b |
| Harrisburg | Apr 15 | Oct 23 | 191 d | 7a |
| Harrison City | Apr 22 | Oct 25 | 186 d | 6b |
| Harrison Valley | May 20 | Sep 29 | 132 d | 5b |
| Harrisonville | Apr 27 | Oct 17 | 173 d | 6b |
| Harrisville | May 7 | Oct 14 | 160 d | 6a |
| Hartleton | Apr 25 | Oct 19 | 177 d | 6b |
| Hartstown | May 4 | Oct 14 | 163 d | 6a |
| Harveys Lake | Apr 23 | Oct 20 | 180 d | 6a |
| Harwick | Apr 16 | Nov 1 | 199 d | 6b |
| Hastings | May 10 | Oct 5 | 148 d | 6a |
| Hatboro | Apr 11 | Nov 1 | 204 d | 7a |
| Hatfield | Apr 26 | Oct 17 | 174 d | 7a |
| Haverford | Apr 8 | Oct 31 | 206 d | 7b |
| Havertown | Mar 30 | Nov 17 | 232 d | 7b |
| Hawk Run | May 13 | Oct 1 | 141 d | 6a |
| Hawley | May 10 | Oct 4 | 147 d | 6a |
| Hawthorn | May 10 | Oct 12 | 155 d | 6a |
| Hazel Hurst | May 15 | Oct 3 | 141 d | 5b |
| Hazleton | Apr 30 | Oct 22 | 175 d | 6b |
| Hegins | Apr 27 | Oct 20 | 176 d | 6b |
| Heilwood | May 8 | Oct 13 | 158 d | 6a |
| Hellertown | Apr 21 | Oct 22 | 184 d | 7a |
| Hendersonville | Apr 24 | Oct 23 | 182 d | 6b |
| Henryville | May 6 | Oct 8 | 155 d | 6b |
| Hereford | Apr 26 | Oct 14 | 171 d | 7a |
| Herman | May 7 | Oct 14 | 160 d | 6b |
| Herminie | Apr 27 | Oct 22 | 178 d | 6b |
| Hermitage | May 15 | Oct 3 | 141 d | 6a |
| Herndon | Apr 25 | Oct 22 | 180 d | 6b |
| Herrick Center | May 14 | Oct 1 | 140 d | 5b |
| Hershey | Apr 9 | Nov 2 | 207 d | 7a |
| Hesston | Apr 19 | Oct 28 | 192 d | 7a |
| Hibbs | Apr 30 | Oct 18 | 171 d | 7a |
| Hickory | Apr 24 | Oct 23 | 182 d | 6b |
| Hidden Valley | May 2 | Oct 17 | 168 d | 6a |
| Highspire | Apr 9 | Nov 2 | 207 d | 7a |
| Hiller | Apr 13 | Nov 5 | 206 d | 6b |
| Hilliards | May 7 | Oct 14 | 160 d | 6a |
| Hillsdale | May 8 | Oct 13 | 158 d | 6a |
| Hillsgrove | May 6 | Oct 7 | 154 d | 6a |
| Hillsville | Apr 30 | Oct 23 | 176 d | 6a |
| Hilltown | Apr 26 | Oct 17 | 174 d | 7a |
| Holbrook | May 3 | Oct 15 | 165 d | 6a |
| Holicong | Apr 13 | Oct 30 | 200 d | 7a |
| Hollidaysburg | Apr 25 | Oct 20 | 178 d | 6b |
| Hollsopple | Apr 29 | Oct 21 | 175 d | 6a |
| Holmes | Apr 2 | Nov 10 | 222 d | 7b |
| Holtwood | Apr 1 | Nov 10 | 223 d | 7a |
| Home | May 10 | Oct 12 | 155 d | 6a |
| Homer City | May 8 | Oct 13 | 158 d | 6b |
| Homestead | Apr 5 | Nov 10 | 219 d | 6b |
| Honesdale | May 10 | Oct 4 | 147 d | 6a |
| Honey Brook | Apr 16 | Oct 27 | 194 d | 7a |
| Honey Grove | Apr 21 | Oct 24 | 186 d | 7a |
| Hookstown | Apr 28 | Oct 26 | 181 d | 6b |
| Hooversville | May 6 | Oct 12 | 159 d | 6a |
| Hop Bottom | May 14 | Oct 2 | 141 d | 6a |
| Hopeland | Apr 18 | Oct 25 | 190 d | 7a |
| Hopewell | Apr 27 | Oct 17 | 173 d | 6b |
| Hopwood | May 19 | Oct 1 | 135 d | 6a |
| Horsham | Apr 11 | Nov 1 | 204 d | 7a |
| Hostetter | May 1 | Oct 13 | 165 d | 6b |
| Houston | Apr 24 | Oct 23 | 182 d | 6b |
| Houtzdale | May 13 | Oct 1 | 141 d | 6a |
| Howard | May 5 | Oct 6 | 154 d | 6b |
| Hughesville | Apr 24 | Oct 23 | 182 d | 6b |
| Hummels Wharf | Apr 27 | Oct 16 | 172 d | 6b |
| Hummelstown | Apr 9 | Nov 2 | 207 d | 7a |
| Hunker | May 1 | Oct 13 | 165 d | 6b |
| Hunlock Creek | May 4 | Oct 11 | 160 d | 6a |
| Huntingdon | Apr 19 | Oct 28 | 192 d | 6b |
| Huntingdon Valley | Apr 4 | Nov 7 | 217 d | 7b |
| Huntington Mills | May 4 | Oct 11 | 160 d | 6a |
| Hustontown | Apr 27 | Oct 17 | 173 d | 6b |
| Hutchinson | Apr 27 | Oct 22 | 178 d | 6b |
| Hyde | May 4 | Oct 11 | 160 d | 6a |
| Hyde Park | Apr 21 | Oct 30 | 192 d | 6b |
| Hydetown | May 12 | Oct 10 | 151 d | 6a |
| Hyndman | Apr 15 | Oct 24 | 192 d | 6b |