Frost dates for Winston Salem Rynlds Airport, NC
At Winston Salem Rynlds Airport, the median last spring frost (32°F) is Mar 26 and the median first fall frost is Nov 9, for a typical growing season of 228 days. For a 90% chance that the last frost has passed, wait until Apr 11. Nearby ZIP codes are in USDA hardiness zones 7b to 8a.
- Mar 26Last spring frost (median)50% chance of 32°F after this date
- Apr 11Safer planting date10% chance of 32°F after this date
- Nov 9First fall frost (median)50% chance of 32°F by this date
- 228 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 9 | Apr 27 |
| 32°F | Mar 6 | Mar 26 | Apr 11 |
| 28°F | Feb 21 | Mar 13 | Mar 30 |
| 24°F | Jan 31 | Feb 27 | Mar 19 |
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 17 | Oct 30 | Nov 12 |
| 32°F | Oct 28 | Nov 9 | Nov 26 |
| 28°F | Nov 5 | Nov 23 | Dec 14 |
| 24°F | Nov 19 | Dec 11 | 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 | 181 days | 203 days | 225 days |
| 32°F | 205 days | 228 days | 253 days |
| 28°F | 230 days | 254 days | 284 days |
| 24°F | 254 days | 287 days | 321 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 |
|---|---|---|---|
| 27101 | 8a | 10 to 15°F | 3 km |
| 27105 | 8a | 10 to 15°F | 3 km |
| 27109 | 8a | 10 to 15°F | 5 km |
| 27110 | 8a | 10 to 15°F | 5 km |
| 27051 | 8a | 10 to 15°F | 9 km |
| 27127 | 7b | 5 to 10°F | 14 km |
| 27107 | 8a | 10 to 15°F | 14 km |
| 27009 | 8a | 10 to 15°F | 17 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 USW00093807, at 36.1336, -80.2222, elevation 296 m (970 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 64.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Rural Hall (13 km)
- Pfafftown (13 km)
- Piedmont Triad Intl Airport (25 km)
- High Point (29 km)
- Yadkinville 6 E (29 km)
- Lexington (32 km)
- Danbury (33 km)
- Greensboro Water Plant (38 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 North Carolina stations · How frost dates are calculated