Frost dates for Beaufort Wastewater Plant, SC
At Beaufort Wastewater Plant, the median last spring frost (32°F) is Mar 3 and the median first fall frost is Dec 9, for a typical growing season of 282 days. For a 90% chance that the last frost has passed, wait until Mar 20. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Mar 3Last spring frost (median)50% chance of 32°F after this date
- Mar 20Safer planting date10% chance of 32°F after this date
- Dec 9First fall frost (median)50% chance of 32°F by this date
- 282 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 | Feb 27 | Mar 16 | Apr 1 |
| 32°F | Feb 2 | Mar 3 | Mar 20 |
| 28°F | Jan 9 | Feb 9 | Mar 11 |
| 24°F | Dec 29 | Jan 26 | Feb 26 |
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 | Nov 10 | Nov 26 | Dec 15 |
| 32°F | Nov 21 | Dec 9 | Jan 4 |
| 28°F | Dec 3 | Dec 28 | Jan 21 |
| 24°F | Dec 13 | Jan 7 | Feb 6 |
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 | 231 days | 255 days | 279 days |
| 32°F | 254 days | 282 days | 313 days |
| 28°F | 282 days | 312 days | 348 days |
| 24°F | 307 days | 346 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 96% |
| 24°F | 73% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 29935 | 9a | 20 to 25°F | 1 km |
| 29905 | 9a | 20 to 25°F | 4 km |
| 29902 | 9a | 20 to 25°F | 9 km |
| 29920 | 9b | 25 to 30°F | 14 km |
| 29909 | 9a | 20 to 25°F | 16 km |
| 29926 | 9b | 25 to 30°F | 18 km |
| 29928 | 9b | 25 to 30°F | 26 km |
| 29910 | 9a | 20 to 25°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 USC00380559, at 32.3953, -80.6956, elevation 8 m (25 ft).
- Data quality: Representative (10+ years), 12 years of freeze data.
- Average days per year at or below 32°F: 13.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Beaufort MCAS (10 km)
- Yemassee 1 N (37 km)
- Edisto Beach State Park (40 km)
- Edisto Island Middleton Plantation (42 km)
- Walterboro 1 SW (54 km)
- Hampton 1s (64 km)
- Charleston Intl Airport (83 km)
- Charleston City (83 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