Frost dates for Robertsdale, AL
At Robertsdale, the median last spring frost (32°F) is Mar 5 and the median first fall frost is Nov 23, for a typical growing season of 264 days. For a 90% chance that the last frost has passed, wait until Mar 26. Nearby ZIP codes are in USDA hardiness zone 9a.
- Mar 5Last spring frost (median)50% chance of 32°F after this date
- Mar 26Safer planting date10% chance of 32°F after this date
- Nov 23First fall frost (median)50% chance of 32°F by this date
- 264 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 | Feb 28 | Mar 21 | Apr 8 |
| 32°F | Feb 12 | Mar 5 | Mar 26 |
| 28°F | Jan 24 | Feb 21 | Mar 14 |
| 24°F | Jan 4 | Feb 3 | Mar 1 |
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 | Oct 27 | Nov 12 | Nov 30 |
| 32°F | Nov 5 | Nov 23 | Dec 15 |
| 28°F | Nov 17 | Dec 9 | Jan 10 |
| 24°F | Dec 1 | Jan 2 | Feb 1 |
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 | 210 days | 236 days | 265 days |
| 32°F | 236 days | 264 days | 298 days |
| 28°F | 261 days | 295 days | 330 days |
| 24°F | 293 days | 328 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 99% |
| 24°F | 88% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 36576 | 9a | 20 to 25°F | 8 km |
| 36551 | 9a | 20 to 25°F | 9 km |
| 36580 | 9a | 20 to 25°F | 10 km |
| 36567 | 9a | 20 to 25°F | 15 km |
| 36535 | 9a | 20 to 25°F | 21 km |
| 36530 | 9a | 20 to 25°F | 22 km |
| 36574 | 9a | 20 to 25°F | 23 km |
| 36511 | 9a | 20 to 25°F | 29 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 USC00016988, at 30.5653, -87.7017, elevation 49 m (161 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 28.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Fairhope 3 NE (17 km)
- Fairhope 2 NE (17 km)
- Mobile Dwtn Airport (36 km)
- Bay Minette (36 km)
- Dauphin Island #2 (50 km)
- Mobile (53 km)
- Coden (54 km)
- Atmore (73 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.