All states › Zone 9a
USDA Hardiness Zone 9a
Zone 9a on the 2023 USDA Plant Hardiness Zone Map means an average annual extreme minimum temperature of 20°F to 25°F, averaged over 1991 to 2020. The zone is about the coldest winter night, not frost dates or summer heat, so towns in the same zone can have different frost dates.
Towns in zone 9a
- MobileZone 9a, median last frost Mar 3
- Grass ValleyZone 9a, median last frost Apr 10
- TallahasseeZone 9a, median last frost Mar 11
- GainesvilleZone 9a, median last frost Mar 3
- OcalaZone 9a, median last frost Feb 25
- PensacolaZone 9a, median last frost Feb 14
- SavannahZone 9a, median last frost Mar 2
- ValdostaZone 9a, median last frost Mar 10
- Baton RougeZone 9a, median last frost Feb 28
- Las VegasZone 9a, median last frost Jan 24
- PortlandZone 9a, median last frost Mar 13
- BeavertonZone 9a, median last frost Apr 1
- TigardZone 9a, median last frost Apr 1
- CharlestonZone 9a, median last frost Feb 4
- San AntonioZone 9a, median last frost Feb 26
- AustinZone 9a, median last frost Feb 20
- ConroeZone 9a, median last frost Feb 24
- SeattleZone 9a, median last frost Mar 8
- BellevueZone 9a, median last frost Mar 8