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 30120
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 30120 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, Cartersville, GA, is 4 miles from the ZIP's center: its last spring frost comes after April 5 in half of years and after April 21 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 |
|---|---|---|---|---|---|---|
| Cartersville, GACartersville Airport | 4 mi | 763 ft | April 5 | April 21 | November 1 | 8a |
| Cartersville station, GA | 4 mi | 789 ft | April 11 | April 26 | October 26 | – |
| Allatoona Dam 2, GA | 7 mi | 975 ft | April 2 | April 19 | November 4 | – |
| Dallas, GA7 mi NE | 14 mi | 1,028 ft | April 2 | April 19 | November 4 | 8a |
| Rome station, GA | 18 mi | 685 ft | April 1 | April 19 | November 3 | 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 Cartersville
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) | May 5 | April 24 | April 18 | April 2 | October 24 | October 11 |
| 32°F | April 21 | April 12 | April 5 | March 17 | November 1 | October 20 |
| 28°F (hard freeze) | April 9 | March 27 | March 20 | February 28 | November 13 | October 30 |
| 24°F | March 25 | March 14 | March 4 | February 8 | November 28 | November 8 |
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.