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 84745
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 84745 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, La Verkin, UT, is 1 miles from the ZIP's center: its last spring frost comes after April 1 in half of years and after April 24 in one year in ten. By the USDA's method its plant hardiness zone is 8a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| La Verkin, UT | 1 mi | 3,194 ft | April 1 | April 24 | November 5 | 8a |
| Zion National Park, UT | 15 mi | 4,038 ft | April 13 | May 2 | November 2 | 8a |
| New Harmony, UT | 18 mi | 5,167 ft | May 9 | May 29 | October 11 | 7a |
| St. George, UTSt George | 20 mi | 2,857 ft | March 14 | April 6 | November 10 | 8b |
| Colorado City, AZ | 22 mi | 5,001 ft | April 26 | May 15 | October 25 | – |
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 La Verkin
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 9 | April 29 | April 20 | March 30 | October 27 | October 15 |
| 32°F | April 24 | April 10 | April 1 | March 5 | November 5 | October 23 |
| 28°F (hard freeze) | April 2 | March 13 | March 4 | February 12 | November 15 | November 1 |
| 24°F | March 5 | February 21 | February 13 | January 23 | November 26 | November 11 |
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.