Frost dates for Cacapon St. Pk #2, WV
At Cacapon St. Pk #2, the median last spring frost (32°F) is Apr 23 and the median first fall frost is Oct 21, 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 21First 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 19 | May 6 | May 25 |
| 32°F | Apr 6 | Apr 23 | May 13 |
| 28°F | Mar 26 | Apr 9 | Apr 30 |
| 24°F | Mar 12 | Mar 29 | 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 29 | Oct 10 | Oct 23 |
| 32°F | Oct 6 | Oct 21 | Nov 2 |
| 28°F | Oct 17 | Nov 1 | Nov 14 |
| 24°F | Oct 30 | Nov 12 | Nov 28 |
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 | 134 days | 156 days | 176 days |
| 32°F | 155 days | 180 days | 201 days |
| 28°F | 182 days | 205 days | 223 days |
| 24°F | 207 days | 227 days | 250 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 |
|---|---|---|---|
| 25422 | 7a | 0 to 5°F | 6 km |
| 25411 | 7a | 0 to 5°F | 8 km |
| 22625 | 7a | 0 to 5°F | 15 km |
| 25434 | 7a | 0 to 5°F | 16 km |
| 26817 | 7a | 0 to 5°F | 18 km |
| 21750 | 7a | 0 to 5°F | 18 km |
| 21766 | 7a | 0 to 5°F | 20 km |
| 25444 | 7a | 0 to 5°F | 20 km |
| 26711 | 7a | 0 to 5°F | 25 km |
| 17211 | 7a | 0 to 5°F | 29 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 USC00461324, at 39.5094, -78.2975, elevation 292 m (958 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 122.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Martinsburg 2 (29 km)
- Martinsburg E Wv Regional Airport (29 km)
- Romney 1 SW (45 km)
- Wardensville R M Farm (51 km)
- Keyser 2 SSW (62 km)
- Lost River (76 km)
- Moorefield 1 SSE (77 km)
- Petersburg (92 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.