Frost dates for Holly Hill 1 SW, SC
At Holly Hill 1 SW, the median last spring frost (32°F) is Mar 22 and the median first fall frost is Nov 12, for a typical growing season of 237 days. For a 90% chance that the last frost has passed, wait until Apr 6. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 22Last spring frost (median)50% chance of 32°F after this date
- Apr 6Safer planting date10% chance of 32°F after this date
- Nov 12First fall frost (median)50% chance of 32°F by this date
- 237 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 18 | Apr 4 | Apr 19 |
| 32°F | Feb 28 | Mar 22 | Apr 6 |
| 28°F | Feb 6 | Mar 6 | Mar 27 |
| 24°F | Jan 15 | Feb 13 | 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 22 | Nov 3 | Nov 18 |
| 32°F | Oct 31 | Nov 12 | Dec 2 |
| 28°F | Nov 8 | Nov 26 | Dec 24 |
| 24°F | Nov 21 | Dec 17 | 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 | 194 days | 214 days | 237 days |
| 32°F | 214 days | 237 days | 264 days |
| 28°F | 237 days | 265 days | 298 days |
| 24°F | 266 days | 302 days | 336 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 97% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 29059 | 8b | 15 to 20°F | 1 km |
| 29448 | 8b | 15 to 20°F | 8 km |
| 29163 | 8b | 15 to 20°F | 11 km |
| 29048 | 8b | 15 to 20°F | 14 km |
| 29142 | 8b | 15 to 20°F | 19 km |
| 29437 | 8b | 15 to 20°F | 20 km |
| 29018 | 8b | 15 to 20°F | 21 km |
| 29477 | 8b | 15 to 20°F | 22 km |
| 29471 | 8b | 15 to 20°F | 27 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 USC00384205, at 33.3172, -80.4183, elevation 29 m (95 ft).
- Data quality: Estimated from nearby stations (2+ years), 9 years of freeze data.
- Average days per year at or below 32°F: 46.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Summerville 4w (36 km)
- Moncks Corner 4 N (41 km)
- Orangeburg Muni Airport (44 km)
- Orangeburg 2 (46 km)
- Manning (47 km)
- Walterboro 1 SW (54 km)
- Bamberg (57 km)
- Charleston Intl Airport (58 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