Frost dates across Alabama
Typical last spring frost, first fall frost, and USDA zone for 8 Alabama cities, from 30-year NOAA climate normals. Every date is a 50 percent odds line, not a promise. Pick a city for the full frost window and what is plantable there now.
Not on the list? Any Alabama ZIP works.
| City | Last spring frost | First fall frost | Season length | Zone |
|---|---|---|---|---|
| Huntsville | Apr 4 | Oct 30 | about 209 days | 8a |
| Mobile | Feb 21 | Dec 6 | about 288 days | 9a |
| Montgomery | Mar 4 | Nov 18 | about 259 days | 8b |
| Birmingham | Mar 21 | Nov 11 | about 235 days | 8a |
| Dothan | Mar 1 | Nov 24 | about 268 days | 9a |
| Florence | Mar 27 | Nov 3 | about 221 days | 8a |
| Phenix City | Mar 5 | Nov 23 | about 263 days | 8b |
| Gadsden | Mar 19 | Nov 13 | about 239 days | 8a |
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