Frost dates for Brookgreen Gardens, SC
At Brookgreen Gardens, the median last spring frost (32°F) is Mar 18 and the median first fall frost is Nov 18, for a typical growing season of 247 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 18Last 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
- 247 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 13 | Mar 28 | Apr 14 |
| 32°F | Feb 25 | Mar 18 | Apr 3 |
| 28°F | Feb 2 | Mar 1 | Mar 23 |
| 24°F | Jan 7 | Feb 7 | Mar 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 25 | Nov 7 | Nov 26 |
| 32°F | Nov 4 | Nov 18 | Dec 8 |
| 28°F | Nov 11 | Nov 30 | Dec 27 |
| 24°F | Nov 24 | Dec 17 | Jan 18 |
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 | 202 days | 225 days | 249 days |
| 32°F | 224 days | 247 days | 277 days |
| 28°F | 246 days | 276 days | 312 days |
| 24°F | 273 days | 308 days | 346 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 |
|---|---|---|---|
| 29585 | 8b | 15 to 20°F | 4 km |
| 29576 | 8b | 15 to 20°F | 7 km |
| 29575 | 8b | 15 to 20°F | 17 km |
| 29588 | 8b | 15 to 20°F | 18 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 USC00381093, at 33.5214, -79.0975, elevation 6 m (20 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 31.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Georgetown Co Airport (31 km)
- Hemingway 8 ESE (32 km)
- Conway (35 km)
- Myrtle Beach (36 km)
- Andrews (44 km)
- N Myrtle Bch Airport (47 km)
- McClellanville 7 NE (48 km)
- McClellanville (61 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