Frost dates for Williamson, WV
At Williamson, the median last spring frost (32°F) is Apr 8 and the median first fall frost is Nov 2, for a typical growing season of 206 days. For a 90% chance that the last frost has passed, wait until Apr 25. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 8Last spring frost (median)50% chance of 32°F after this date
- Apr 25Safer planting date10% chance of 32°F after this date
- Nov 2First fall frost (median)50% chance of 32°F by this date
- 206 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 8 | Apr 22 | May 8 |
| 32°F | Mar 26 | Apr 8 | Apr 25 |
| 28°F | Mar 10 | Mar 29 | Apr 12 |
| 24°F | Feb 22 | Mar 16 | Mar 31 |
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 21 | Nov 2 | Nov 13 |
| 28°F | Oct 31 | Nov 10 | Nov 26 |
| 24°F | Nov 8 | Nov 23 | Dec 14 |
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 | 164 days | 184 days | 202 days |
| 32°F | 183 days | 206 days | 225 days |
| 28°F | 208 days | 228 days | 249 days |
| 24°F | 230 days | 254 days | 282 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 |
|---|---|---|---|
| 41503 | 7a | 0 to 5°F | 2 km |
| 25667 | 7a | 0 to 5°F | 4 km |
| 41514 | 7a | 0 to 5°F | 4 km |
| 25661 | 7a | 0 to 5°F | 5 km |
| 41527 | 7a | 0 to 5°F | 5 km |
| 41535 | 7a | 0 to 5°F | 9 km |
| 41531 | 7a | 0 to 5°F | 10 km |
| 41519 | 7a | 0 to 5°F | 11 km |
| 25690 | 7a | 0 to 5°F | 11 km |
| 41564 | 7a | 0 to 5°F | 11 km |
| 25688 | 7a | 0 to 5°F | 11 km |
| 41567 | 7a | 0 to 5°F | 12 km |
| 41544 | 7a | 0 to 5°F | 12 km |
| 25670 | 7a | 0 to 5°F | 13 km |
| 41543 | 7a | 0 to 5°F | 14 km |
| 25685 | 7a | 0 to 5°F | 14 km |
| 25678 | 7a | 0 to 5°F | 14 km |
| 41555 | 7a | 0 to 5°F | 15 km |
| 41250 | 7a | 0 to 5°F | 16 km |
| 41571 | 7a | 0 to 5°F | 16 km |
| 41558 | 7a | 0 to 5°F | 16 km |
| 41528 | 7a | 0 to 5°F | 18 km |
| 25692 | 7a | 0 to 5°F | 19 km |
| 25672 | 7a | 0 to 5°F | 19 km |
| 41539 | 7a | 0 to 5°F | 19 km |
| 25696 | 7a | 0 to 5°F | 19 km |
| 41547 | 7a | 0 to 5°F | 22 km |
| 41557 | 7a | 0 to 5°F | 24 km |
| 41501 | 7a | 0 to 5°F | 28 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 USC00469610, at 37.6731, -82.2761, elevation 232 m (760 ft).
- Data quality: Representative (10+ years), 18 years of freeze data.
- Average days per year at or below 32°F: 95.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Dunlow 1 SW (33 km)
- Logan (33 km)
- Rd Bailey Lake (41 km)
- Oceana 2 SE (58 km)
- Madison 3nnw (61 km)
- Pineville (66 km)
- Hamlin (69 km)
- Huntington Tri State Airport (81 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.