Frost dates for Haw River 1e, NC
At Haw River 1e, the median last spring frost (32°F) is Apr 4 and the median first fall frost is Nov 3, for a typical growing season of 215 days. For a 90% chance that the last frost has passed, wait until Apr 19. Nearby ZIP codes are in USDA hardiness zone 8a.
- Apr 4Last spring frost (median)50% chance of 32°F after this date
- Apr 19Safer planting date10% chance of 32°F after this date
- Nov 3First fall frost (median)50% chance of 32°F by this date
- 215 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 | Apr 1 | Apr 15 | May 1 |
| 32°F | Mar 15 | Apr 4 | Apr 19 |
| 28°F | Feb 28 | Mar 20 | Apr 8 |
| 24°F | Feb 8 | Mar 2 | 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 15 | Oct 27 | Nov 6 |
| 32°F | Oct 24 | Nov 3 | Nov 17 |
| 28°F | Nov 1 | Nov 13 | Dec 3 |
| 24°F | Nov 10 | Nov 27 | Dec 24 |
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 | 174 days | 195 days | 214 days |
| 32°F | 195 days | 215 days | 237 days |
| 28°F | 217 days | 241 days | 266 days |
| 24°F | 243 days | 270 days | 302 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 |
|---|---|---|---|
| 27258 | 8a | 10 to 15°F | 3 km |
| 27302 | 8a | 10 to 15°F | 12 km |
| 27217 | 8a | 10 to 15°F | 14 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 USC00313919, at 36.0639, -79.3692, elevation 194 m (636 ft).
- Data quality: Representative (10+ years), 13 years of freeze data.
- Average days per year at or below 32°F: 80.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Burlington Fire Station #5 (7 km)
- Burlington Alamance Airport (10 km)
- Cane Creek Rsvr (17 km)
- Durham 11 W (27 km)
- Chapel Hill Williams Airport (31 km)
- Chapel Hill 2 W (31 km)
- Siler City 2 N (35 km)
- Yanceyville 4 SE (36 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