Frost dates for Coweeta Exp. Station, NC
At Coweeta Exp. Station, the median last spring frost (32°F) is Apr 23 and the median first fall frost is Oct 17, for a typical growing season of 175 days. For a 90% chance that the last frost has passed, wait until May 11. Nearby ZIP codes are in USDA hardiness zones 7a to 7b.
- Apr 23Last spring frost (median)50% chance of 32°F after this date
- May 11Safer planting date10% chance of 32°F after this date
- Oct 17First fall frost (median)50% chance of 32°F by this date
- 175 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 21 | May 7 | May 24 |
| 32°F | Apr 6 | Apr 23 | May 11 |
| 28°F | Mar 21 | Apr 8 | Apr 28 |
| 24°F | Mar 4 | Mar 26 | Apr 11 |
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 | Sep 22 | Oct 7 | Oct 19 |
| 32°F | Oct 4 | Oct 17 | Nov 1 |
| 28°F | Oct 12 | Oct 28 | Nov 10 |
| 24°F | Oct 24 | Nov 8 | Nov 26 |
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 | 132 days | 152 days | 173 days |
| 32°F | 152 days | 175 days | 197 days |
| 28°F | 177 days | 201 days | 224 days |
| 24°F | 204 days | 228 days | 253 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 |
|---|---|---|---|
| 28763 | 7b | 5 to 10°F | 5 km |
| 28775 | 7a | 0 to 5°F | 11 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 USC00312102, at 35.0603, -83.4300, elevation 685 m (2,247 ft).
- Data quality: Representative (10+ years), 28 years of freeze data.
- Average days per year at or below 32°F: 103.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Franklin (14 km)
- Highlands (21 km)
- Hayesville 1 NE (35 km)
- Cullowhee (36 km)
- Andrews (40 km)
- Robbinsville Ag 5 NE (43 km)
- Bryson City 4 (43 km)
- Lake Toxaway 2 SW (44 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