Frost dates for Dauphin Island #2, AL
At Dauphin Island #2, the median last spring frost (32°F) is Jan 31 and the median first fall frost is Jan 6, for a typical growing season of 340 days. For a 90% chance that the last frost has passed, wait until Feb 27. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Jan 31Last spring frost (median)50% chance of 32°F after this date
- Feb 27Safer planting date10% chance of 32°F after this date
- Jan 6First fall frost (median)50% chance of 32°F by this date
- 340 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Jan 14 | Feb 11 | Mar 10 |
| 32°F | Jan 1 | Jan 31 | Feb 27 |
| 28°F | Dec 26 | Jan 21 | Feb 11 |
| 24°F | Jan 1 | Jan 21 | Feb 7 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Nov 27 | Dec 28 | Jan 21 |
| 32°F | Dec 12 | Jan 6 | Feb 2 |
| 28°F | Dec 20 | Jan 13 | Feb 4 |
| 24°F | Dec 30 | Jan 17 | Feb 6 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 272 days | 313 days | 345 days |
| 32°F | 305 days | 340 days | 365 days |
| 28°F | 331 days | 365 days | 365 days |
| 24°F | 353 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 98% |
| 32°F | 78% |
| 28°F | 44% |
| 24°F | 15% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 36528 | 9b | 25 to 30°F | 15 km |
| 36542 | 9a | 20 to 25°F | 31 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00012172, at 30.2506, -88.0775, elevation 2 m (8 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 4.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Coden (21 km)
- Fairhope 2 NE (38 km)
- Fairhope 3 NE (38 km)
- Mobile Dwtn Airport (42 km)
- Mobile (50 km)
- Robertsdale (50 km)
- Bay Minette (76 km)
- Atmore (120 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.