Frost dates for Burlington Alamance Airport, NC
At Burlington Alamance Airport, the median last spring frost (32°F) is Apr 1 and the median first fall frost is Nov 2, for a typical growing season of 215 days. For a 90% chance that the last frost has passed, wait until Apr 17. Nearby ZIP codes are in USDA hardiness zone 8a.
- Apr 1Last spring frost (median)50% chance of 32°F after this date
- Apr 17Safer planting date10% chance of 32°F after this date
- Nov 2First 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 | Mar 31 | Apr 14 | May 3 |
| 32°F | Mar 13 | Apr 1 | Apr 17 |
| 28°F | Mar 1 | Mar 18 | Apr 3 |
| 24°F | Feb 11 | Mar 5 | Mar 22 |
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 13 | Oct 25 | Nov 5 |
| 32°F | Oct 21 | Nov 2 | Nov 16 |
| 28°F | Nov 1 | Nov 13 | Nov 30 |
| 24°F | Nov 9 | Nov 26 | Dec 20 |
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 | 171 days | 192 days | 211 days |
| 32°F | 194 days | 215 days | 237 days |
| 28°F | 219 days | 239 days | 262 days |
| 24°F | 240 days | 265 days | 297 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 |
|---|---|---|---|
| 27201 | 8a | 10 to 15°F | 2 km |
| 27215 | 8a | 10 to 15°F | 5 km |
| 27377 | 8a | 10 to 15°F | 11 km |
| 27342 | 8a | 10 to 15°F | 13 km |
| 27249 | 8a | 10 to 15°F | 16 km |
| 27283 | 8a | 10 to 15°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 USW00093783, at 36.0467, -79.4769, elevation 188 m (617 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 78.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Burlington Fire Station #5 (3 km)
- Haw River 1e (10 km)
- Cane Creek Rsvr (24 km)
- Greensboro Water Plant (30 km)
- Siler City 2 N (32 km)
- Durham 11 W (36 km)
- Randleman (38 km)
- Chapel Hill 2 W (39 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