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 02780
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 02780 in zone 6b (the coldest night of a typical year: -5 to 0°F).
The nearest station, Taunton station, MA, is 3 miles from the ZIP's center: its last spring frost comes after April 22 in half of years and after May 6 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Taunton station, MA | 3 mi | 20 ft | April 22 | May 6 | October 19 | – |
| NWS Boston/Norton, MA | 3 mi | 85 ft | April 23 | May 5 | October 17 | 6b |
| Taunton, MATaunton Municipal Airport | 6 mi | 43 ft | May 2 | May 16 | October 8 | 6b |
| Norton W, MA | 6 mi | 95 ft | April 27 | May 10 | October 15 | – |
| Bridgewater, MA | 9 mi | 40 ft | May 1 | May 15 | October 9 | – |
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 Taunton station
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) | May 18 | May 9 | May 4 | April 23 | October 8 | September 27 |
| 32°F | May 6 | April 28 | April 22 | April 10 | October 19 | October 4 |
| 28°F (hard freeze) | April 22 | April 15 | April 8 | March 28 | November 1 | October 16 |
| 24°F | April 7 | April 2 | March 28 | March 13 | November 14 | October 30 |
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.