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 30815
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 30815 in zone 8b (the coldest night of a typical year: 15 to 20°F).
The nearest station, Augusta, GA, is 8 miles from the ZIP's center: its last spring frost comes after March 23 in half of years and after April 9 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 |
|---|---|---|---|---|---|---|
| Augusta, GAAugusta Bush Field Airport | 8 mi | 132 ft | March 23 | April 9 | November 9 | 8b |
| Augusta Daniel Field Airport, GA | 13 mi | 423 ft | February 27 | March 19 | December 4 | 9a |
| Waynesboro, GA2 mi S | 15 mi | 277 ft | March 21 | April 8 | November 9 | 8b |
| Appling, GA2 mi NW | 24 mi | 396 ft | March 27 | April 13 | November 7 | – |
| Graniteville, SC1.2 mi NE | 26 mi | 298 ft | April 9 | April 23 | November 1 | – |
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 Augusta
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 20 | April 12 | April 5 | March 18 | November 1 | October 18 |
| 32°F | April 9 | March 31 | March 23 | February 28 | November 9 | October 28 |
| 28°F (hard freeze) | March 28 | March 16 | March 8 | February 13 | November 24 | November 6 |
| 24°F | March 13 | March 1 | February 17 | January 21 | December 10 | November 18 |
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.