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 89143
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 89143 in zone 9a (the coldest night of a typical year: 20 to 25°F).
The nearest station, Desert National Wildlife Refuge, NV, is 9 miles from the ZIP's center: its last spring frost comes after March 22 in half of years and after April 13 in one year in ten. By the USDA's method its plant hardiness zone is 8b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Desert National Wildlife Refuge, NV | 9 mi | 2,914 ft | March 22 | April 13 | November 7 | 8b |
| Las Vegas Air Terminal, NV | 9 mi | 2,203 ft | January 24 | February 19 | December 10 | 9b |
| North Las Vegas, NV | 12 mi | 1,898 ft | February 1 | February 24 | December 8 | – |
| Las Vegas, NVHarry Reid International Airport | 19 mi | 2,131 ft | January 20 | February 14 | December 15 | 9b |
| Red Rock Canyon - Spring Mount Ranch S, NV | 20 mi | 3,780 ft | March 13 | April 11 | November 15 | – |
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 Desert National Wildlife Refuge
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 2 | April 17 | April 10 | March 21 | October 28 | October 13 |
| 32°F | April 13 | April 2 | March 22 | February 28 | November 7 | October 21 |
| 28°F (hard freeze) | March 25 | March 10 | March 1 | February 7 | November 19 | November 3 |
| 24°F | March 3 | February 19 | February 7 | January 3 | December 5 | November 17 |
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.