Frost dates for Rockford 3 ESE, AL
At Rockford 3 ESE, the median last spring frost (32°F) is Mar 25 and the median first fall frost is Nov 11, for a typical growing season of 230 days. For a 90% chance that the last frost has passed, wait until Apr 13. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- Mar 25Last spring frost (median)50% chance of 32°F after this date
- Apr 13Safer planting date10% chance of 32°F after this date
- Nov 11First fall frost (median)50% chance of 32°F by this date
- 230 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 20 | Apr 7 | Apr 25 |
| 32°F | Mar 4 | Mar 25 | Apr 13 |
| 28°F | Feb 15 | Mar 11 | Apr 1 |
| 24°F | Jan 23 | Feb 22 | Mar 18 |
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 19 | Nov 1 | Nov 14 |
| 32°F | Oct 28 | Nov 11 | Dec 1 |
| 28°F | Nov 7 | Nov 24 | Dec 15 |
| 24°F | Nov 17 | Dec 6 | Jan 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 | 187 days | 207 days | 232 days |
| 32°F | 205 days | 230 days | 258 days |
| 28°F | 230 days | 258 days | 288 days |
| 24°F | 259 days | 292 days | 328 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 99% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 35136 | 8a | 10 to 15°F | 10 km |
| 36026 | 8a | 10 to 15°F | 11 km |
| 35089 | 8a | 10 to 15°F | 12 km |
| 36080 | 8b | 15 to 20°F | 20 km |
| 35183 | 8a | 10 to 15°F | 23 km |
| 36024 | 8b | 15 to 20°F | 27 km |
| 36092 | 8b | 15 to 20°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 USC00017020, at 32.8711, -86.1758, elevation 183 m (600 ft).
- Data quality: Representative (10+ years), 15 years of freeze data.
- Average days per year at or below 32°F: 46.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Alexander City (23 km)
- Sylacauga 4 NE (37 km)
- Clanton (40 km)
- Clanton 2 NE (41 km)
- Thorsby Exp. Station (47 km)
- Childersburg Water Plant (49 km)
- Camp Hill 2nw (49 km)
- Milstead (55 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.