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 44906
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 44906 in zone 6a (the coldest night of a typical year: -10 to -5°F).
The nearest station, Mansfield (5 mi W), OH, is 2 miles from the ZIP's center: its last spring frost comes after April 30 in half of years and after May 17 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Mansfield (5 mi W), OH | 2 mi | 1,350 ft | April 30 | May 17 | October 15 | – |
| Mansfield, OHMansfield Lahm Regional Airport | 5 mi | 1,295 ft | April 26 | May 12 | October 22 | 6a |
| Galion, OHGalion Water Works | 12 mi | 1,170 ft | April 26 | May 11 | October 20 | – |
| Ashland, OH2 mi SW | 13 mi | 1,265 ft | April 30 | May 15 | October 15 | – |
| Bucyrus, OH | 21 mi | 955 ft | April 19 | May 6 | October 27 | 6a |
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 Mansfield (5 mi W)
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 27 | May 17 | May 9 | April 25 | October 4 | September 20 |
| 32°F | May 17 | May 7 | April 30 | April 16 | October 15 | October 1 |
| 28°F (hard freeze) | May 7 | April 27 | April 21 | April 4 | October 28 | October 13 |
| 24°F | April 23 | April 16 | April 9 | March 24 | November 5 | October 24 |
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.