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 30118
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 30118 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, Carrollton, GA, is 2 miles from the ZIP's center: its last spring frost comes after March 28 in half of years and after April 12 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 |
|---|---|---|---|---|---|---|
| Carrollton, GA | 2 mi | 995 ft | March 28 | April 12 | November 5 | 8a |
| Newnan, GA7 mi WNW | 16 mi | 795 ft | April 3 | April 18 | November 2 | 8a |
| Heflin, AL | 30 mi | 1,000 ft | April 6 | April 22 | October 31 | 8a |
| Rock Mills, AL | 31 mi | 750 ft | April 2 | April 18 | November 3 | – |
| Peachtree City, GAFalcon Field | 34 mi | 858 ft | March 26 | April 13 | November 6 | 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 Carrollton
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 26 | April 16 | April 8 | March 24 | October 26 | October 14 |
| 32°F | April 12 | April 2 | March 28 | March 7 | November 5 | October 23 |
| 28°F (hard freeze) | March 31 | March 22 | March 15 | February 20 | November 16 | November 1 |
| 24°F | March 21 | March 9 | February 28 | January 29 | December 1 | November 9 |
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.