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 02647
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 02647 in zone 7a (the coldest night of a typical year: 0 to 5°F).
The nearest station, Barnstable, MA, is 2 miles from the ZIP's center: its last spring frost comes after April 16 in half of years and after April 30 in one year in ten. By the USDA's method its plant hardiness zone is 7a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Barnstable, MAHyannis | 2 mi | 60 ft | April 16 | April 30 | October 30 | 7a |
| Hyannis Barnstable Municipal Airport, MA | 3 mi | 55 ft | April 22 | May 5 | October 28 | 7a |
| East Sandwich, MA | 10 mi | 150 ft | April 26 | May 9 | October 26 | – |
| West Harwich, MA | 10 mi | 15 ft | April 13 | April 26 | November 3 | – |
| Chatham, MAChatham Municipal Airport | 17 mi | 68 ft | April 13 | April 26 | November 4 | 7b |
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 Barnstable
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 13 | May 3 | April 29 | April 16 | October 19 | October 5 |
| 32°F | April 30 | April 22 | April 16 | April 5 | October 30 | October 15 |
| 28°F (hard freeze) | April 15 | April 7 | April 3 | March 22 | November 11 | October 29 |
| 24°F | April 4 | March 30 | March 24 | March 9 | November 25 | November 8 |
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.