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 27101
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 27101 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, Winston-Salem, NC, is 2 miles from the ZIP's center: its last spring frost comes after March 26 in half of years and after April 11 in one year in ten. By the USDA's method its plant hardiness zone is 8a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Winston-Salem, NCWinston Salem Rynlds Airport | 2 mi | 970 ft | March 26 | April 11 | November 9 | 8a |
| Pfafftown, NC | 10 mi | 950 ft | April 9 | April 23 | October 31 | – |
| Rural Hall, NC | 10 mi | 960 ft | April 6 | April 21 | October 31 | – |
| Greensboro, NCPiedmont Triad International Airport | 14 mi | 890 ft | March 30 | April 14 | November 5 | 8a |
| High Point, NC | 16 mi | 900 ft | March 30 | April 15 | November 5 | 7b |
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 Winston-Salem
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) | April 27 | April 16 | April 9 | March 23 | October 30 | October 17 |
| 32°F | April 11 | April 2 | March 26 | March 6 | November 9 | October 28 |
| 28°F (hard freeze) | March 30 | March 20 | March 13 | February 21 | November 23 | November 5 |
| 24°F | March 19 | March 7 | February 27 | January 31 | December 11 | November 19 |
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.