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Alabama frost dates
Across the 37Alabama weather stations below, the average last spring frost ranges from Feb 21 in Mobile Dwtn to Apr 7 in Valley Head 1 Ssw. The statewide middle is about Mar 18 for the last spring frost and Nov 10 for the first fall frost. Mobile Dwtn has the longest growing season, about 288 days. Hardiness zones in these places: 7b, 8a, 8b, 9a.
Frost dates by city
| Place | Zone | Last spring frost | 90% safe after | First fall frost | Frost-free days |
|---|---|---|---|---|---|
| Mobile Dwtn | 9a | Feb 21 | Mar 15 | Dec 6 | 288 |
| Andalusia Opp | 8b | Feb 28 | Mar 20 | Nov 28 | 273 |
| Dothan | 9a | Mar 1 | Mar 21 | Nov 24 | 268 |
| Mobile | 9a | Mar 3 | Mar 21 | Nov 25 | 267 |
| Florala | 9a | Mar 4 | Mar 22 | Nov 26 | 267 |
| Highland Home 2 S | 8b | Mar 4 | Mar 25 | Nov 26 | 267 |
| Greenville Crenshaw | 8b | Mar 8 | Mar 28 | Nov 20 | 257 |
| Evergreen Middleton | 8b | Mar 10 | Mar 31 | Nov 17 | 252 |
| Alabaster Shelby | 8b | Mar 12 | Mar 31 | Nov 16 | 249 |
| Gainesville 2 Ne | 8b | Mar 12 | Apr 1 | Nov 13 | 246 |
| Montgomery | 8b | Mar 13 | Mar 31 | Nov 13 | 245 |
| Weedon | 8b | Mar 13 | Apr 1 | Nov 17 | 249 |
| Brewton 3 Nne | 8b | Mar 14 | Apr 2 | Nov 16 | 247 |
| Fairhope 3 Ne | 9a | Mar 15 | Apr 2 | Nov 19 | 249 |
| Tuscaloosa | 8b | Mar 16 | Apr 3 | Nov 12 | 241 |
| Greensboro 2 Wnw | 8b | Mar 17 | Apr 6 | Nov 11 | 239 |
| Thomasville 2 S | 8b | Mar 17 | Apr 7 | Nov 9 | 237 |
| Troy 2 W | 8b | Mar 17 | Apr 3 | Nov 16 | 244 |
| Northport 2 S | 8b | Mar 18 | Apr 4 | Nov 10 | 237 |
| Troy | 8b | Mar 18 | Apr 7 | Nov 10 | 237 |
| Muscle Shoals | 8a | Mar 20 | Apr 6 | Nov 8 | 233 |
| Birmingham | 8a | Mar 21 | Apr 8 | Nov 11 | 235 |
| Selma 13 Wnw | 8b | Mar 21 | Apr 12 | Nov 5 | 229 |
| Selma 6 Sse | 8b | Mar 21 | Apr 12 | Nov 7 | 231 |
| Clanton 2 Ne | 8a | Mar 22 | Apr 9 | Nov 10 | 233 |
| Anniston Metro | 8a | Mar 23 | Apr 9 | Nov 9 | 231 |
| Huntsville | 8a | Mar 24 | Apr 8 | Nov 8 | 229 |
| Talladega 10 Nne | 8a | Mar 26 | Apr 14 | Nov 4 | 223 |
| Decatur Pryor | 8a | Mar 27 | Apr 10 | Nov 3 | 221 |
| Muscle Shoals 2 N | 8a | Mar 27 | Apr 13 | Nov 3 | 221 |
| Courtland 2 Wsw | 8a | Mar 28 | Apr 13 | Nov 3 | 220 |
| Gadsden 19 N | 8a | Apr 1 | Apr 20 | Oct 31 | 213 |
| Centreville 6 Sw | 8a | Apr 2 | Apr 19 | Nov 2 | 214 |
| Scottsboro 2 Ne | 7b | Apr 2 | Apr 19 | Oct 30 | 211 |
| Cullman 3 Ene | 8a | Apr 5 | Apr 22 | Nov 1 | 210 |
| Russellville 4 Sse | 8a | Apr 5 | Apr 22 | Oct 28 | 206 |
| Valley Head 1 Ssw | 7b | Apr 7 | Apr 25 | Oct 30 | 206 |
Dates are the 50% probability of a 32°F freeze (NOAA 1991–2020 normals); "90% safe after" is the date after which a later spring freeze happens in only 1 year in 10.
When to plant in Alabama
Using the statewide middle dates (last frost Mar 18, first frost Nov 10). Adjust for your town with the table above or the planting calendar.
| Plant | When to plant in Alabama |
|---|---|
| Tomatoes | Mar 25 – Apr 8 |
| Peas | Feb 4 – Feb 25; fall: Aug 18 – Sep 8 |
| Potatoes | Feb 18 – Mar 11 |
| Green beans | Mar 25 – Apr 8; fall: Aug 25 – Sep 8 |
| Garlic | Nov 10 – Dec 8 |
| Tulips | Oct 27 – Dec 8 |