Frost dates for Dillon, SC
At Dillon, the median last spring frost (32°F) is Mar 28 and the median first fall frost is Nov 8, for a typical growing season of 227 days. For a 90% chance that the last frost has passed, wait until Apr 12. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 28Last spring frost (median)50% chance of 32°F after this date
- Apr 12Safer planting date10% chance of 32°F after this date
- Nov 8First fall frost (median)50% chance of 32°F by this date
- 227 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 23 | Apr 8 | Apr 24 |
| 32°F | Mar 9 | Mar 28 | Apr 12 |
| 28°F | Feb 20 | Mar 14 | Apr 2 |
| 24°F | Jan 30 | Feb 25 | Mar 18 |
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 18 | Oct 31 | Nov 11 |
| 32°F | Oct 27 | Nov 8 | Nov 25 |
| 28°F | Nov 4 | Nov 20 | Dec 9 |
| 24°F | Nov 15 | Dec 4 | Jan 5 |
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 | 185 days | 205 days | 225 days |
| 32°F | 205 days | 227 days | 252 days |
| 28°F | 227 days | 253 days | 280 days |
| 24°F | 253 days | 284 days | 320 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 29536 | 8b | 15 to 20°F | 2 km |
| 29547 | 8b | 15 to 20°F | 9 km |
| 29565 | 8b | 15 to 20°F | 14 km |
| 29563 | 8b | 15 to 20°F | 15 km |
| 29567 | 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 USC00382386, at 34.4092, -79.3564, elevation 36 m (118 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 59.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Mullins (26 km)
- Marion (27 km)
- Florence 8 NE (37 km)
- McColl 3 NNW (38 km)
- Florence Regional Airport (42 km)
- Darlington (49 km)
- Cheraw (58 km)
- Hartsville (64 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