Frost dates for Martinsville Fltr Plant, VA
At Martinsville Fltr Plant, the median last spring frost (32°F) is Apr 24 and the median first fall frost is Oct 21, for a typical growing season of 179 days. For a 90% chance that the last frost has passed, wait until May 11. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 24Last spring frost (median)50% chance of 32°F after this date
- May 11Safer planting date10% chance of 32°F after this date
- Oct 21First fall frost (median)50% chance of 32°F by this date
- 179 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 21 | May 5 | May 20 |
| 32°F | Apr 11 | Apr 24 | May 11 |
| 28°F | Mar 31 | Apr 13 | Apr 29 |
| 24°F | Mar 14 | Mar 31 | Apr 16 |
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 12 | Oct 26 |
| 32°F | Oct 9 | Oct 21 | Nov 3 |
| 28°F | Oct 16 | Oct 30 | Nov 11 |
| 24°F | Oct 27 | Nov 8 | 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 | 179 days | 197 days |
| 28°F | 177 days | 199 days | 220 days |
| 24°F | 203 days | 223 days | 248 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 |
|---|---|---|---|
| 24112 | 7b | 5 to 10°F | 2 km |
| 24078 | 7b | 5 to 10°F | 5 km |
| 24168 | 7b | 5 to 10°F | 8 km |
| 24089 | 7b | 5 to 10°F | 9 km |
| 24148 | 7b | 5 to 10°F | 14 km |
| 24054 | 7b | 5 to 10°F | 15 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 USC00445300, at 36.7047, -79.8653, elevation 238 m (780 ft).
- Data quality: Representative (10+ years), 26 years of freeze data.
- Average days per year at or below 32°F: 119.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Philpott Dam 2 (16 km)
- Rocky Mount (30 km)
- Stuart (36 km)
- Chatham (43 km)
- Floyd 2 NE (45 km)
- Danville 2 SE (47 km)
- Copper Hill (48 km)
- Danville Regional Airport (49 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.