Frost dates for Scottsboro, AL
At Scottsboro, the median last spring frost (32°F) is Apr 4 and the median first fall frost is Oct 30, for a typical growing season of 209 days. For a 90% chance that the last frost has passed, wait until Apr 20. Nearby ZIP codes are in USDA hardiness zones 7b to 8a.
- Apr 4Last spring frost (median)50% chance of 32°F after this date
- Apr 20Safer planting date10% chance of 32°F after this date
- Oct 30First fall frost (median)50% chance of 32°F by this date
- 209 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 | Apr 2 | Apr 17 | Apr 30 |
| 32°F | Mar 18 | Apr 4 | Apr 20 |
| 28°F | Mar 1 | Mar 22 | Apr 7 |
| 24°F | Feb 14 | Mar 9 | Mar 28 |
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 9 | Oct 21 | Nov 3 |
| 32°F | Oct 17 | Oct 30 | Nov 12 |
| 28°F | Oct 26 | Nov 8 | Nov 29 |
| 24°F | Nov 4 | Nov 22 | Dec 15 |
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 | 168 days | 188 days | 208 days |
| 32°F | 188 days | 209 days | 231 days |
| 28°F | 211 days | 232 days | 257 days |
| 24°F | 229 days | 258 days | 289 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 |
|---|---|---|---|
| 35769 | 8a | 10 to 15°F | 10 km |
| 35768 | 7b | 5 to 10°F | 13 km |
| 35771 | 8a | 10 to 15°F | 16 km |
| 35776 | 8a | 10 to 15°F | 18 km |
| 35774 | 8a | 10 to 15°F | 19 km |
| 35755 | 8a | 10 to 15°F | 19 km |
| 35751 | 7b | 5 to 10°F | 25 km |
| 35766 | 7b | 5 to 10°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 USC00017304, at 34.6736, -86.0536, elevation 188 m (615 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 75.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Scottsboro 2 NE (5 km)
- Owens Cross Roads 3s (38 km)
- Fort Payne (40 km)
- Bridgeport 5 NW (41 km)
- Valley Head 1 SSW (42 km)
- Valley Head (43 km)
- Sand Mount Substn (44 km)
- Gadsden 19 N (44 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.