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 31605
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 31605 in zone 9a (the coldest night of a typical year: 20 to 25°F).
The nearest station, Valdosta (2 mi S), GA, is 9 miles from the ZIP's center: its last spring frost comes after March 5 in half of years and after March 23 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Valdosta (2 mi S), GA | 9 mi | 265 ft | March 5 | March 23 | November 27 | – |
| Valdosta, GAValdosta Regional Airport | 11 mi | 198 ft | March 10 | March 31 | November 21 | 9a |
| Quitman, GA2 mi NW | 23 mi | 185 ft | March 11 | March 31 | November 18 | – |
| Homerville, GA5 mi N | 27 mi | 187 ft | March 11 | April 3 | November 17 | 8b |
| Jasper, FL | 33 mi | 147 ft | March 11 | March 30 | November 22 | 9a |
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 Valdosta (2 mi S)
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 6 | March 28 | March 19 | February 28 | November 16 | November 1 |
| 32°F | March 23 | March 14 | March 5 | February 9 | November 27 | November 9 |
| 28°F (hard freeze) | March 12 | February 28 | February 16 | January 21 | December 16 | November 22 |
| 24°F | March 1 | February 11 | February 1 | December 31 | January 4 | December 5 |
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.