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 14304
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 14304 in zone 6b (the coldest night of a typical year: -5 to 0°F).
The nearest station, Niagara Falls, NY, is 0 miles from the ZIP's center: its last spring frost comes after May 1 in half of years and after May 15 in one year in ten. By the USDA's method its plant hardiness zone is 6a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Niagara Falls, NYNiagara Falls International Airport | 0 mi | 585 ft | May 1 | May 15 | October 19 | 6a |
| Niagara Falls station, NY | 2 mi | 588 ft | April 26 | May 11 | October 25 | – |
| North Tonawanda, NY | 5 mi | 578 ft | May 6 | May 19 | October 15 | 6b |
| Youngstown, NY2 mi E | 10 mi | 295 ft | April 29 | May 12 | October 28 | 6b |
| Buffalo, NYBuffalo Niagara International Airport | 15 mi | 693 ft | April 24 | May 9 | October 26 | 6b |
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 Niagara Falls
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 25 | May 17 | May 11 | April 30 | October 6 | September 25 |
| 32°F | May 15 | May 7 | May 1 | April 21 | October 19 | October 3 |
| 28°F (hard freeze) | May 6 | April 28 | April 22 | April 8 | November 1 | October 17 |
| 24°F | April 24 | April 16 | April 9 | March 27 | November 12 | October 31 |
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.