Frost dates for Mannington 8 WNW, WV
At Mannington 8 WNW, the median last spring frost (32°F) is May 3 and the median first fall frost is Oct 10, for a typical growing season of 159 days. For a 90% chance that the last frost has passed, wait until May 22. Nearby ZIP codes are in USDA hardiness zones 6a to 6b.
- May 3Last spring frost (median)50% chance of 32°F after this date
- May 22Safer planting date10% chance of 32°F after this date
- Oct 10First fall frost (median)50% chance of 32°F by this date
- 159 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 29 | May 15 | May 31 |
| 32°F | Apr 19 | May 3 | May 22 |
| 28°F | Apr 7 | Apr 22 | May 12 |
| 24°F | Mar 23 | Apr 7 | Apr 23 |
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 18 | Oct 1 | Oct 13 |
| 32°F | Sep 27 | Oct 10 | Oct 26 |
| 28°F | Oct 5 | Oct 22 | Nov 5 |
| 24°F | Oct 14 | Nov 1 | Nov 16 |
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 | 116 days | 139 days | 161 days |
| 32°F | 135 days | 159 days | 180 days |
| 28°F | 157 days | 182 days | 202 days |
| 24°F | 187 days | 208 days | 228 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 |
|---|---|---|---|
| 26437 | 6a | -10 to -5°F | 4 km |
| 26582 | 6b | -5 to 0°F | 7 km |
| 26348 | 6b | -5 to 0°F | 11 km |
| 26572 | 6b | -5 to 0°F | 14 km |
| 26587 | 6b | -5 to 0°F | 14 km |
| 26463 | 6b | -5 to 0°F | 16 km |
| 26448 | 6b | -5 to 0°F | 16 km |
| 26419 | 6b | -5 to 0°F | 16 km |
| 26377 | 6b | -5 to 0°F | 17 km |
| 26339 | 6b | -5 to 0°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 USC00465626, at 39.5436, -80.4647, elevation 335 m (1,100 ft).
- Data quality: Representative (10+ years), 25 years of freeze data.
- Average days per year at or below 32°F: 144.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Burton (12 km)
- Fairmont (30 km)
- Clarksburg 1 (32 km)
- Clarksburg Benedum Airport (34 km)
- Middlebourne 3 ESE (35 km)
- W Union 2 (38 km)
- Morgantown L&d (43 km)
- Tygart Dam (45 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.