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 07063
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 07063 in zone 7a (the coldest night of a typical year: 0 to 5°F).
The nearest station, Plainfield, NJ, is 2 miles from the ZIP's center: its last spring frost comes after April 11 in half of years and after April 27 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 |
|---|---|---|---|---|---|---|
| Plainfield, NJ | 2 mi | 90 ft | April 11 | April 27 | October 28 | 7a |
| Cranford, NJ | 8 mi | 80 ft | April 11 | April 28 | October 31 | 7a |
| New Brunswick, NJ3 mi SE | 9 mi | 111 ft | April 15 | May 1 | October 26 | 7a |
| Canoe Brook, NJ | 11 mi | 180 ft | April 18 | May 6 | October 27 | 7a |
| Somerville (4 mi NW), NJ | 11 mi | 134 ft | April 30 | May 14 | October 20 | – |
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 Plainfield
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 2 | April 27 | April 12 | October 17 | October 3 |
| 32°F | April 27 | April 18 | April 11 | March 31 | October 28 | October 13 |
| 28°F (hard freeze) | April 11 | April 4 | March 31 | March 16 | November 7 | October 24 |
| 24°F | April 1 | March 26 | March 20 | March 4 | November 20 | November 5 |
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.