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 30606
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 30606 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, Athens, GA, is 6 miles from the ZIP's center: its last spring frost comes after March 23 in half of years and after April 10 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 |
|---|---|---|---|---|---|---|
| Athens, GAAthens Ben Epps Airport | 6 mi | 785 ft | March 23 | April 10 | November 10 | 8b |
| U Of Ga Plant Science, GA | 8 mi | 840 ft | March 27 | April 12 | November 8 | 8a |
| Winterville, GA | 8 mi | 890 ft | April 2 | April 16 | November 2 | 8a |
| Watkinsville, GA5 mi SSE | 11 mi | 741 ft | March 24 | April 12 | November 12 | 8b |
| Danielsville, GA | 14 mi | 780 ft | March 29 | April 14 | November 7 | 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 Athens
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 21 | April 11 | April 5 | March 18 | October 31 | October 19 |
| 32°F | April 10 | March 31 | March 23 | March 2 | November 10 | October 28 |
| 28°F (hard freeze) | March 27 | March 16 | March 9 | February 13 | November 25 | November 7 |
| 24°F | March 15 | March 1 | February 18 | January 21 | December 13 | November 21 |
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.