Frost dates for Sylacauga 4 NE, AL
At Sylacauga 4 NE, the median last spring frost (32°F) is Apr 2 and the median first fall frost is Oct 31, for a typical growing season of 211 days. For a 90% chance that the last frost has passed, wait until Apr 19. Nearby ZIP codes are in USDA hardiness zone 8a.
- Apr 2Last spring frost (median)50% chance of 32°F after this date
- Apr 19Safer planting date10% chance of 32°F after this date
- Oct 31First fall frost (median)50% chance of 32°F by this date
- 211 daysGrowing season (median)between 32°F freezes
USDA hardiness zone 8a (10 to 15°F) · see all zone 8a frost dates
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 | Mar 29 | Apr 14 | Apr 30 |
| 32°F | Mar 13 | Apr 2 | Apr 19 |
| 28°F | Feb 24 | Mar 19 | Apr 8 |
| 24°F | Feb 6 | Mar 4 | Mar 27 |
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 10 | Oct 23 | Nov 4 |
| 32°F | Oct 16 | Oct 31 | Nov 15 |
| 28°F | Oct 24 | Nov 8 | Nov 30 |
| 24°F | Nov 2 | Nov 22 | Dec 17 |
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 | 171 days | 192 days | 213 days |
| 32°F | 189 days | 211 days | 238 days |
| 28°F | 210 days | 236 days | 265 days |
| 24°F | 236 days | 265 days | 299 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 35150 | 8a | 10 to 15°F | 4 km |
| 35149 | 8a | 10 to 15°F | 4 km |
| 35082 | 8a | 10 to 15°F | 8 km |
| 35151 | 8a | 10 to 15°F | 15 km |
| 35072 | 8a | 10 to 15°F | 18 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 USC00017999, at 33.2053, -86.2114, elevation 149 m (490 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 73.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Childersburg Water Plant (15 km)
- Talladega (25 km)
- Rockford 3 ESE (37 km)
- Alexander City (38 km)
- Ashland 3 ENE (41 km)
- Talladega 10 NNE (43 km)
- Alabaster Shelby Co Airport (53 km)
- Thorsby Exp. Station (53 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.