Frost dates by ZIP code: The nearest NOAA stations to your ZIP, 1991-2020 normals
Enter a five-digit ZIP code. PlainClimate finds its center (Census Bureau 2024) and the five nearest NOAA stations with frost dates, and shows each station's last spring and first autumn 32°F dates with its distance and elevation.
Frost dates near ZIP 28805
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 28805 in zone 7b (the coldest night of a typical year: 5 to 10°F).
The nearest station, Asheville station, NC, is 5 miles from the ZIP's center: its last spring frost comes after April 6 in half of years and after April 24 in one year in ten. By the USDA's method its plant hardiness zone is 7b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Asheville station, NC | 5 mi | 2,238 ft | April 6 | April 24 | October 31 | 7b |
| Swannanoa, NC2 mi SSE | 6 mi | 4,320 ft | April 22 | May 11 | October 24 | 6b |
| Black Mountain, NC2 mi W | 7 mi | 2,290 ft | April 19 | May 7 | October 23 | – |
| North Fork 2, NC | 8 mi | 2,480 ft | April 5 | April 22 | October 31 | – |
| Bent Creek, NC | 10 mi | 2,110 ft | April 26 | May 12 | October 18 | 7a |
Frost comes later in spring at higher and colder stations and earlier in low, open ground: prefer a station at a similar elevation to yours. Hardiness zone in the table: the USDA's rule (the average of each year's coldest night, 1991-2020) applied to the station's own record.
Every frost threshold at Asheville station
NOAA publishes the dates for several temperatures and odds. A 30% spring date means a 3-in-10 chance of a later frost (the convention almanacs use); 50% is the median; 10% the cautious date.
| Threshold | Spring, 10% | Spring, 30% | Spring, 50% | Spring, 90% | Autumn, 50% | Autumn, 10% |
|---|---|---|---|---|---|---|
| 36°F (light frost) | May 9 | April 29 | April 20 | April 5 | October 21 | October 9 |
| 32°F | April 24 | April 13 | April 6 | March 20 | October 31 | October 17 |
| 28°F (hard freeze) | April 10 | April 2 | March 26 | March 7 | November 10 | October 28 |
| 24°F | March 31 | March 20 | March 12 | February 19 | November 23 | November 6 |
Source: NOAA NCEI 1991-2020 annual normals; ZIP centers: Census Bureau 2024 Gazetteer; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. Autumn 10%: one year in ten has its first frost before this date.