Frost dates for Breaks Interstate Park, VA
At Breaks Interstate Park, the median last spring frost (32°F) is Apr 22 and the median first fall frost is Oct 23, for a typical growing season of 182 days. For a 90% chance that the last frost has passed, wait until May 8. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 22Last spring frost (median)50% chance of 32°F after this date
- May 8Safer planting date10% chance of 32°F after this date
- Oct 23First fall frost (median)50% chance of 32°F by this date
- 182 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 2 | May 19 |
| 32°F | Apr 8 | Apr 22 | May 8 |
| 28°F | Mar 28 | Apr 9 | Apr 25 |
| 24°F | Mar 13 | 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 | Oct 1 | Oct 14 | Oct 27 |
| 32°F | Oct 10 | Oct 23 | Nov 4 |
| 28°F | Oct 19 | Nov 1 | Nov 12 |
| 24°F | Oct 29 | Nov 10 | Nov 25 |
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 | 146 days | 163 days | 181 days |
| 32°F | 163 days | 182 days | 201 days |
| 28°F | 183 days | 204 days | 223 days |
| 24°F | 207 days | 227 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 |
|---|---|---|---|
| 24607 | 7a | 0 to 5°F | 2 km |
| 24256 | 7a | 0 to 5°F | 7 km |
| 41513 | 7a | 0 to 5°F | 8 km |
| 41522 | 7a | 0 to 5°F | 10 km |
| 41548 | 7a | 0 to 5°F | 10 km |
| 24603 | 7a | 0 to 5°F | 10 km |
| 41540 | 7a | 0 to 5°F | 13 km |
| 41559 | 7a | 0 to 5°F | 13 km |
| 41566 | 7a | 0 to 5°F | 16 km |
| 41554 | 7a | 0 to 5°F | 16 km |
| 41524 | 7a | 0 to 5°F | 17 km |
| 41562 | 7a | 0 to 5°F | 20 km |
| 41526 | 7a | 0 to 5°F | 25 km |
| 41560 | 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 USC00440982, at 37.2889, -82.2928, elevation 577 m (1,893 ft).
- Data quality: Representative (10+ years), 11 years of freeze data.
- Average days per year at or below 32°F: 118.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Grundy (18 km)
- Clintwood 1w (24 km)
- Nora 4 SSE (31 km)
- Wise 1se (42 km)
- Lebanon (49 km)
- Richlands (49 km)
- Saltville 1n (64 km)
- Big Stone Gap (66 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.