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 30315
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 30315 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, Atlanta, GA, is 6 miles from the ZIP's center: its last spring frost comes after March 15 in half of years and after April 4 in one year in ten. By the USDA's method its plant hardiness zone is 8b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Atlanta, GAAtlanta Hartsfield International Airport | 6 mi | 1,010 ft | March 15 | April 4 | November 20 | 8b |
| Atlanta Fulton County Airport, GA | 10 mi | 840 ft | March 24 | April 10 | November 8 | 8a |
| Jonesboro, GA | 12 mi | 930 ft | March 25 | April 10 | November 12 | 8b |
| Chamblee, GAAtlanta Peachtree Airport | 13 mi | 1,002 ft | March 25 | April 12 | November 9 | 8b |
| Mableton, GA1 mi N | 15 mi | 980 ft | March 27 | April 12 | November 7 | – |
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 Atlanta
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 16 | April 5 | March 29 | March 10 | November 7 | October 28 |
| 32°F | April 4 | March 23 | March 15 | February 23 | November 20 | November 4 |
| 28°F (hard freeze) | March 20 | March 10 | February 28 | February 1 | December 5 | November 14 |
| 24°F | March 12 | February 26 | February 11 | January 12 | December 25 | November 29 |
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.