Frost dates for Clarks Hill 1 W, SC
At Clarks Hill 1 W, the median last spring frost (32°F) is Mar 15 and the median first fall frost is Nov 18, for a typical growing season of 252 days. For a 90% chance that the last frost has passed, wait until Apr 3. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 15Last spring frost (median)50% chance of 32°F after this date
- Apr 3Safer planting date10% chance of 32°F after this date
- Nov 18First fall frost (median)50% chance of 32°F by this date
- 252 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 9 | Mar 29 | Apr 15 |
| 32°F | Feb 22 | Mar 15 | Apr 3 |
| 28°F | Jan 30 | Feb 26 | Mar 19 |
| 24°F | Jan 7 | Feb 3 | Mar 6 |
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 26 | Nov 6 | Nov 22 |
| 32°F | Nov 3 | Nov 18 | Dec 12 |
| 28°F | Nov 16 | Dec 8 | Jan 7 |
| 24°F | Dec 3 | Jan 1 | Jan 24 |
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 | 200 days | 225 days | 248 days |
| 32°F | 224 days | 252 days | 281 days |
| 28°F | 254 days | 289 days | 323 days |
| 24°F | 288 days | 324 days | 363 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 93% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 29821 | 8b | 15 to 20°F | 8 km |
| 29838 | 8b | 15 to 20°F | 10 km |
| 30809 | 8b | 15 to 20°F | 12 km |
| 29844 | 8b | 15 to 20°F | 14 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 USC00381726, at 33.6633, -82.1897, elevation 122 m (400 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 57.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- McCormick (29 km)
- Edgefield 2.2 ENE (31 km)
- Johnston 4 SW (34 km)
- Graniteville 1.2 NE (38 km)
- Aiken 2 E (47 km)
- Aiken 5se (50 km)
- Saluda (53 km)
- Greenwood (60 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