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 36303
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 36303 in zone 9a (the coldest night of a typical year: 20 to 25°F).
The nearest station, Dothan, AL, is 5 miles from the ZIP's center: its last spring frost comes after March 1 in half of years and after March 21 in one year in ten. By the USDA's method its plant hardiness zone is 9a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Dothan, ALDothan Regional Airport | 5 mi | 370 ft | March 1 | March 21 | November 24 | 9a |
| Headland, AL | 7 mi | 370 ft | March 5 | March 25 | November 24 | 8b |
| Enterprise, AL4 mi W | 30 mi | 337 ft | March 9 | March 31 | November 21 | – |
| Fort Gaines, GAFort Gaines 2 | 31 mi | 210 ft | March 13 | March 28 | November 21 | – |
| Bonifay, FLBonifay Tri County Airport | 32 mi | 85 ft | March 5 | March 25 | November 18 | – |
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 Dothan
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 1 | March 23 | March 15 | February 23 | November 12 | October 30 |
| 32°F | March 21 | March 10 | March 1 | February 3 | November 24 | November 7 |
| 28°F (hard freeze) | March 11 | February 27 | February 12 | January 14 | December 16 | November 17 |
| 24°F | February 26 | February 6 | January 29 | December 30 | January 4 | December 2 |
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.