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 43085
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 43085 in zone 6b (the coldest night of a typical year: -5 to 0°F).
The nearest station, Columbus Ohio State University Airport, OH, is 4 miles from the ZIP's center: its last spring frost comes after April 22 in half of years and after May 9 in one year in ten. By the USDA's method its plant hardiness zone is 6b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Columbus Ohio State University Airport, OH | 4 mi | 905 ft | April 22 | May 9 | October 23 | 6b |
| Westerville, OH | 4 mi | 802 ft | April 22 | May 10 | October 24 | 6a |
| Columbus WCMH, OH | 5 mi | 740 ft | April 20 | May 7 | October 24 | – |
| Columbus, OHColumbus Port Columbus International Airport | 10 mi | 810 ft | April 18 | May 5 | October 27 | 6b |
| Columbus-Valley Crossing, OH | 14 mi | 760 ft | April 23 | May 8 | October 19 | – |
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 Columbus Ohio State University Airport
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 20 | May 9 | May 3 | April 18 | October 12 | September 28 |
| 32°F | May 9 | April 30 | April 22 | April 6 | October 23 | October 9 |
| 28°F (hard freeze) | April 26 | April 16 | April 9 | March 24 | November 2 | October 20 |
| 24°F | April 13 | April 4 | March 30 | March 13 | November 13 | November 1 |
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.