Frost dates for Alderson, WV
At Alderson, the median last spring frost (32°F) is Apr 26 and the median first fall frost is Oct 17, for a typical growing season of 173 days. For a 90% chance that the last frost has passed, wait until May 15. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 26Last spring frost (median)50% chance of 32°F after this date
- May 15Safer planting date10% chance of 32°F after this date
- Oct 17First fall frost (median)50% chance of 32°F by this date
- 173 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 22 | May 8 | May 23 |
| 32°F | Apr 11 | Apr 26 | May 15 |
| 28°F | Mar 30 | Apr 12 | May 2 |
| 24°F | Mar 14 | Mar 30 | Apr 12 |
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 | Sep 26 | Oct 8 | Oct 20 |
| 32°F | Oct 5 | Oct 17 | Oct 30 |
| 28°F | Oct 13 | Oct 26 | Nov 7 |
| 24°F | Oct 22 | Nov 5 | Nov 19 |
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 | 133 days | 154 days | 173 days |
| 32°F | 153 days | 173 days | 194 days |
| 28°F | 173 days | 196 days | 217 days |
| 24°F | 198 days | 219 days | 241 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 |
|---|---|---|---|
| 24910 | 6b | -5 to 0°F | 2 km |
| 24993 | 6b | -5 to 0°F | 8 km |
| 24962 | 7a | 0 to 5°F | 9 km |
| 25966 | 6b | -5 to 0°F | 12 km |
| 24981 | 7a | 0 to 5°F | 13 km |
| 24916 | 6b | -5 to 0°F | 13 km |
| 24943 | 6b | -5 to 0°F | 14 km |
| 24985 | 6b | -5 to 0°F | 14 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 USC00460102, at 37.7272, -80.6583, elevation 473 m (1,552 ft).
- Data quality: Representative (10+ years), 16 years of freeze data.
- Average days per year at or below 32°F: 127.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Bluestone Lake (22 km)
- Union 3 SSE (23 km)
- Lewisburg 3 N (27 km)
- White Sulphur Springs (32 km)
- Rupert 4 N (32 km)
- Beckley Raleigh Co Airport (41 km)
- Athens (47 km)
- Beckley Va Hospital (47 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.