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 10307
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 10307 in zone 7b (the coldest night of a typical year: 5 to 10°F).
The nearest station, New Brunswick, NJ, is 10 miles from the ZIP's center: its last spring frost comes after April 15 in half of years and after May 1 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 |
|---|---|---|---|---|---|---|
| New Brunswick, NJ3 mi SE | 10 mi | 111 ft | April 15 | May 1 | October 26 | 7a |
| Plainfield, NJ | 11 mi | 90 ft | April 11 | April 27 | October 28 | 7a |
| Cranford, NJ | 12 mi | 80 ft | April 11 | April 28 | October 31 | 7a |
| Newark, NJNewark Liberty International Airport | 13 mi | 7 ft | April 2 | April 15 | November 10 | 7b |
| Freehold, NJFreehold-Marlboro | 13 mi | 194 ft | April 17 | May 6 | October 23 | 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 New Brunswick
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 14 | May 5 | April 29 | April 14 | October 14 | October 3 |
| 32°F | May 1 | April 21 | April 15 | April 2 | October 26 | October 11 |
| 28°F (hard freeze) | April 17 | April 6 | April 2 | March 18 | November 7 | October 23 |
| 24°F | April 3 | March 28 | March 21 | March 5 | 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.