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 32209
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 32209 in zone 9b (the coldest night of a typical year: 25 to 30°F).
The nearest station, Jacksonville, FL, is 9 miles from the ZIP's center: its last spring frost comes after February 25 in half of years and after March 19 in one year in ten. By the USDA's method its plant hardiness zone is 9a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Jacksonville, FLJacksonville International Airport | 9 mi | 33 ft | February 25 | March 19 | December 7 | 9a |
| Jacksonville Naval Air Station, FL | 9 mi | 20 ft | February 1 | March 3 | January 5 | – |
| Jacksonville Craig Municipal Airport, FL | 11 mi | 41 ft | February 9 | March 7 | December 31 | 9b |
| Jackson Whitehouse NOLF, FL | 11 mi | 99 ft | February 28 | March 23 | December 3 | – |
| Mayport Pilot Station, FL | 17 mi | 16 ft | February 1 | March 1 | January 5 | 9b |
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 Jacksonville
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 1 | March 20 | March 13 | February 19 | November 22 | November 7 |
| 32°F | March 19 | March 7 | February 25 | January 22 | December 7 | November 17 |
| 28°F (hard freeze) | March 4 | February 17 | February 4 | January 4 | January 2 | November 29 |
| 24°F | February 15 | February 3 | January 21 | December 26 | January 10 | December 9 |
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.