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 30240
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 30240 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, LaGrange, GA, is 5 miles from the ZIP's center: its last spring frost comes after March 31 in half of years and after April 15 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| LaGrange, GALa Grange (1 mi N) | 5 mi | 730 ft | March 31 | April 15 | November 5 | – |
| West Point, GA | 11 mi | 575 ft | March 26 | April 15 | November 9 | – |
| Rock Mills, AL | 13 mi | 750 ft | April 2 | April 18 | November 3 | – |
| Lafayette (2 mi W), AL | 20 mi | 740 ft | April 9 | April 25 | October 30 | 8a |
| Newnan, GA7 mi WNW | 28 mi | 795 ft | April 3 | April 18 | November 2 | 8a |
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 LaGrange
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 29 | April 19 | April 12 | March 27 | October 28 | October 15 |
| 32°F | April 15 | April 5 | March 31 | March 15 | November 5 | October 25 |
| 28°F (hard freeze) | April 2 | March 27 | March 19 | February 26 | November 16 | November 2 |
| 24°F | March 26 | March 15 | March 5 | February 4 | December 1 | November 12 |
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.