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Frost dates and growing zones in Alabama
Towns covered so far in Alabama fall in USDA zones 8a, 8b, 9a. Median dates mean frost comes later (spring) or earlier (fall) in half of years.
Towns
| Town | Zone | Median last frost | Median first frost |
|---|---|---|---|
| Huntsville | 8a | Mar 24 | Nov 8 |
| Mobile | 9a | Mar 3 | Nov 25 |
| Birmingham | 8a | Mar 21 | Nov 11 |
| Montgomery | 8b | Mar 13 | Nov 13 |
| Tuscaloosa | 8b | Mar 12 | Nov 15 |
| Madison | 8a | Mar 24 | Nov 8 |
| Athens | 8a | Mar 20 | Nov 12 |