Frost dates for Rock Hill York Co Airport, SC
At Rock Hill York Co Airport, the median last spring frost (32°F) is Mar 31 and the median first fall frost is Nov 4, for a typical growing season of 218 days. For a 90% chance that the last frost has passed, wait until Apr 15. Nearby ZIP codes are in USDA hardiness zone 8a.
- Mar 31Last spring frost (median)50% chance of 32°F after this date
- Apr 15Safer planting date10% chance of 32°F after this date
- Nov 4First fall frost (median)50% chance of 32°F by this date
- 218 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 29 | Apr 13 | Apr 28 |
| 32°F | Mar 13 | Mar 31 | Apr 15 |
| 28°F | Feb 27 | Mar 18 | Apr 4 |
| 24°F | Feb 8 | Mar 4 | Mar 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 | Oct 14 | Oct 26 | Nov 7 |
| 32°F | Oct 23 | Nov 4 | Nov 19 |
| 28°F | Nov 1 | Nov 16 | Dec 4 |
| 24°F | Nov 13 | Dec 1 | Dec 29 |
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 | 178 days | 196 days | 215 days |
| 32°F | 199 days | 218 days | 241 days |
| 28°F | 219 days | 243 days | 269 days |
| 24°F | 245 days | 273 days | 304 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 |
|---|---|---|---|
| 29732 | 8a | 10 to 15°F | 3 km |
| 29708 | 8a | 10 to 15°F | 9 km |
| 29715 | 8a | 10 to 15°F | 12 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 USW00053871, at 34.9869, -81.0575, elevation 204 m (669 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 65.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Winthrop Univ (6 km)
- York 5 SSE (15 km)
- Chester 1 SE (36 km)
- Ninety Nine Island (40 km)
- Santuck (58 km)
- Pageland (67 km)
- Winnsboro (69 km)
- Union 8 S (70 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