Frost dates for Charleston WFO, WV
At Charleston WFO, the median last spring frost (32°F) is Apr 23 and the median first fall frost is Oct 20, for a typical growing season of 180 days. For a 90% chance that the last frost has passed, wait until May 13. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 23Last spring frost (median)50% chance of 32°F after this date
- May 13Safer planting date10% chance of 32°F after this date
- Oct 20First fall frost (median)50% chance of 32°F by this date
- 180 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 20 | May 4 | May 22 |
| 32°F | Apr 9 | Apr 23 | May 13 |
| 28°F | Mar 28 | Apr 10 | Apr 29 |
| 24°F | Mar 12 | Mar 31 | Apr 13 |
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 30 | Oct 11 | Oct 22 |
| 32°F | Oct 8 | Oct 20 | Nov 1 |
| 28°F | Oct 17 | Oct 30 | Nov 12 |
| 24°F | Oct 27 | Nov 10 | Nov 26 |
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 | 139 days | 159 days | 179 days |
| 32°F | 157 days | 180 days | 198 days |
| 28°F | 180 days | 201 days | 220 days |
| 24°F | 208 days | 225 days | 249 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 |
|---|---|---|---|
| 25309 | 7a | 0 to 5°F | 3 km |
| 25314 | 7a | 0 to 5°F | 6 km |
| 25303 | 7a | 0 to 5°F | 6 km |
| 25107 | 7a | 0 to 5°F | 9 km |
| 25003 | 7a | 0 to 5°F | 9 km |
| 25009 | 7a | 0 to 5°F | 13 km |
| 25315 | 7a | 0 to 5°F | 16 km |
| 25024 | 7a | 0 to 5°F | 19 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 USC00461579, at 38.3133, -81.7186, elevation 280 m (918 ft).
- Data quality: Standard (24+ years of data), 24 years of freeze data.
- Average days per year at or below 32°F: 116.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Saint Albans (13 km)
- Charleston Yeager Airport (13 km)
- Sissonville 1sw (24 km)
- Madison 3nnw (26 km)
- Winfield Locks (29 km)
- London Locks (33 km)
- Hamlin (34 km)
- Clendenin (38 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.