Alabama Hardiness Zones

Alabama covers USDA plant hardiness zones 7b to 9b on the 2023 map, so its coldest areas average 5 to 10 °F on the coldest winter night. Find your zone by ZIP code, or pick a city below for its zone, sunrise and daylight by month.

Alabama hardiness zone map

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This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km. Dots mark cities with their own page.

Source: USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture, planthardiness.ars.usda.gov. Underlying data © PRISM Group, Oregon State University, prism.oregonstate.edu, accessed 2026-08-30.

Zones and daylight by city

City	Zone	Coldest night	Longest day	Shortest day
Birmingham	8a	10 to 15 °F	14h 23m	9h 56m
Montgomery	8b	15 to 20 °F	14h 17m	10h 02m
Huntsville	8a	10 to 15 °F	14h 29m	9h 50m
Mobile	9a	20 to 25 °F	14h 08m	10h 10m
Tuscaloosa	8b	15 to 20 °F	14h 21m	9h 57m
Hoover	8a	10 to 15 °F	14h 22m	9h 57m
Auburn	8b	15 to 20 °F	14h 18m	10h 00m
Dothan	9a	20 to 25 °F	14h 11m	10h 07m

Gardening in Alabama?

Your zone says what survives winter. Deconstruct Sun measures how many hours of direct sun your exact spot gets, so you can pick plants that thrive. Free on iPhone.

Questions

What hardiness zones are in Alabama?

Alabama spans USDA zones 7b to 9b on the 2023 map. Among its larger cities, Birmingham is coldest (zone 8a) and Mobile is warmest (zone 9a).

How do I find my exact zone in Alabama?

Enter your ZIP code in the hardiness zone lookup on this site. It reads the 2023 USDA data for that ZIP and warns you if you are near a zone boundary.

How much sun do gardens in Alabama get?

In Birmingham, an open spot gets up to 14.4 hours of daylight in June but only 9.9 in December. Trees and buildings cut that down, especially in winter. The Deconstruct Sun app measures the real direct-sun hours for one exact spot.