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 34681
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 34681 in zone 10a (the coldest night of a typical year: 30 to 35°F).
The nearest station, Tarpon Springs, FL, is 4 miles from the ZIP's center: its last spring frost comes after January 20 in half of years and after February 14 in one year in ten. By the USDA's method its plant hardiness zone is 10a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Tarpon Springs, FLTarpon Springs Sewage Plant | 4 mi | 6 ft | January 20 | February 14 | January 9 | 10a |
| St. Petersburg, FLSt Petersburg International Airport | 14 mi | 11 ft | January 17 | February 6 | January 14 | 10a |
| Tampa, FLTampa International Airport | 17 mi | 19 ft | January 20 | February 10 | January 12 | 10a |
| St Petersburg station, FL | 24 mi | 8 ft | January 17 | February 5 | January 15 | – |
| Spring Hill, FLWeeki Wachee | 32 mi | 20 ft | February 5 | March 5 | January 1 | – |
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 Tarpon Springs
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) | March 1 | February 11 | January 31 | January 1 | December 31 | December 3 |
| 32°F | February 14 | February 1 | January 20 | December 29 | January 9 | December 16 |
| 28°F (hard freeze) | February 5 | January 26 | January 15 | December 29 | January 13 | December 24 |
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.