Frost dates for Childersburg Water Plant, AL
At Childersburg Water Plant, the median last spring frost (32°F) is Mar 31 and the median first fall frost is Nov 2, for a typical growing season of 216 days. For a 90% chance that the last frost has passed, wait until Apr 16. Nearby ZIP codes are in USDA hardiness zone 8a.
- Mar 31Last spring frost (median)50% chance of 32°F after this date
- Apr 16Safer planting date10% chance of 32°F after this date
- Nov 2First fall frost (median)50% chance of 32°F by this date
- 216 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 | Mar 26 | Apr 11 | Apr 27 |
| 32°F | Mar 10 | Mar 31 | Apr 16 |
| 28°F | Feb 23 | Mar 16 | Apr 4 |
| 24°F | Jan 31 | Feb 28 | Mar 21 |
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 12 | Oct 25 | Nov 5 |
| 32°F | Oct 20 | Nov 2 | Nov 16 |
| 28°F | Oct 31 | Nov 12 | Dec 3 |
| 24°F | Nov 8 | Nov 27 | Dec 25 |
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 | 176 days | 195 days | 216 days |
| 32°F | 194 days | 216 days | 242 days |
| 28°F | 216 days | 243 days | 272 days |
| 24°F | 241 days | 273 days | 309 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 |
|---|---|---|---|
| 35032 | 8a | 10 to 15°F | 3 km |
| 35044 | 8a | 10 to 15°F | 3 km |
| 35078 | 8a | 10 to 15°F | 10 km |
| 35014 | 8a | 10 to 15°F | 11 km |
| 35186 | 8a | 10 to 15°F | 16 km |
| 35178 | 8a | 10 to 15°F | 16 km |
| 35185 | 8a | 10 to 15°F | 20 km |
| 35147 | 8a | 10 to 15°F | 23 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 USC00011620, at 33.2850, -86.3431, elevation 127 m (418 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 58.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Sylacauga 4 NE (15 km)
- Talladega (24 km)
- Talladega 10 NNE (42 km)
- Alabaster Shelby Co Airport (42 km)
- Helena (46 km)
- Rockford 3 ESE (49 km)
- Birmingham Airport (49 km)
- Thorsby Exp. Station (51 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.