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 39174
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 39174 in zone 8b (the coldest night of a typical year: 15 to 20°F).
The nearest station, Jackson Hawkins Field, MS, is 6 miles from the ZIP's center: its last spring frost comes after March 6 in half of years and after March 24 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 |
|---|---|---|---|---|---|---|
| Jackson Hawkins Field, MS | 6 mi | 342 ft | March 6 | March 24 | November 19 | 8b |
| Jackson, MSJackson International Airport | 7 mi | 330 ft | March 14 | April 2 | November 14 | 8b |
| Canton, MS4 mi N | 20 mi | 250 ft | March 22 | April 9 | November 6 | – |
| Oakley Experiment Station, MS | 25 mi | 205 ft | March 16 | April 6 | November 6 | – |
| Satartia, MS8 mi SW | 30 mi | 141 ft | March 11 | April 1 | November 15 | – |
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 Jackson Hawkins Field
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 7 | March 29 | March 20 | March 2 | November 9 | October 27 |
| 32°F | March 24 | March 13 | March 6 | February 15 | November 19 | November 4 |
| 28°F (hard freeze) | March 13 | March 1 | February 19 | January 23 | December 4 | November 11 |
| 24°F | February 28 | February 12 | January 31 | January 2 | December 29 | November 28 |
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.