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 31808
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 31808 in zone 8b (the coldest night of a typical year: 15 to 20°F).
The nearest station, Mulberry Grove, GA, is 4 miles from the ZIP's center: its last spring frost comes after March 21 in half of years and after April 13 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Mulberry Grove, GA | 4 mi | 501 ft | March 21 | April 13 | November 18 | – |
| Columbus #2, GA | 9 mi | 435 ft | March 21 | April 9 | November 11 | – |
| Columbus, GAColumbus Metropolitan Airport | 9 mi | 392 ft | March 5 | March 24 | November 23 | 8b |
| Fort Benning Lawson Field, GA | 19 mi | 289 ft | March 26 | April 13 | November 8 | – |
| West Point, GA | 20 mi | 575 ft | March 26 | April 15 | November 9 | – |
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 Mulberry Grove
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 21 | April 11 | April 5 | March 15 | November 5 | October 23 |
| 32°F | April 13 | March 31 | March 21 | February 25 | November 18 | November 1 |
| 28°F (hard freeze) | April 2 | March 15 | March 3 | February 3 | December 1 | November 8 |
| 24°F | March 21 | February 28 | February 14 | January 16 | December 21 | November 25 |
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.