Frost dates for Blackville 3 W, SC
At Blackville 3 W, the median last spring frost (32°F) is Mar 20 and the median first fall frost is Nov 13, for a typical growing season of 238 days. For a 90% chance that the last frost has passed, wait until Apr 8. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 20Last spring frost (median)50% chance of 32°F after this date
- Apr 8Safer planting date10% chance of 32°F after this date
- Nov 13First fall frost (median)50% chance of 32°F by this date
- 238 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 | Mar 16 | Apr 2 | Apr 18 |
| 32°F | Feb 27 | Mar 20 | Apr 8 |
| 28°F | Feb 6 | Mar 5 | Mar 26 |
| 24°F | Jan 17 | Feb 12 | Mar 14 |
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 20 | Nov 2 | Nov 17 |
| 32°F | Oct 29 | Nov 13 | Dec 2 |
| 28°F | Nov 9 | Nov 30 | Dec 28 |
| 24°F | Nov 24 | Dec 20 | Jan 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 | 193 days | 213 days | 238 days |
| 32°F | 212 days | 238 days | 266 days |
| 28°F | 240 days | 269 days | 302 days |
| 24°F | 270 days | 305 days | 342 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 96% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 29826 | 8b | 15 to 20°F | 4 km |
| 29817 | 8b | 15 to 20°F | 6 km |
| 29853 | 8b | 15 to 20°F | 11 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 USW00063826, at 33.3550, -81.3278, elevation 97 m (317 ft).
- Data quality: Representative (10+ years), 18 years of freeze data.
- Average days per year at or below 32°F: 39.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Barnwell 5 ENE (14 km)
- Bamberg (28 km)
- Wagener 1sw (32 km)
- Aiken 5se (37 km)
- Allendale 2 NW (38 km)
- Aiken 2 E (41 km)
- N 5ne (44 km)
- Orangeburg 2 (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.
All South Carolina stations · How frost dates are calculated