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 89701
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 89701 in zone 7a (the coldest night of a typical year: 0 to 5°F).
The nearest station, Carson, NV, is 2 miles from the ZIP's center: its last spring frost comes after May 4 in half of years and after May 29 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 |
|---|---|---|---|---|---|---|
| Carson, NVCarson City | 2 mi | 4,761 ft | May 4 | May 29 | October 6 | 6b |
| Glenbrook, NV | 12 mi | 6,350 ft | June 5 | June 22 | October 9 | 8a |
| Minden, NV | 12 mi | 4,709 ft | May 30 | June 14 | September 26 | – |
| Virginia City, NV | 13 mi | 6,340 ft | May 12 | June 5 | October 17 | – |
| Dagget Pass, NV | 14 mi | 7,334 ft | June 7 | June 24 | September 28 | – |
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 Carson
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) | June 13 | June 2 | May 26 | May 5 | September 26 | September 11 |
| 32°F | May 29 | May 14 | May 4 | April 20 | October 6 | September 24 |
| 28°F (hard freeze) | May 9 | April 27 | April 20 | April 6 | October 18 | October 4 |
| 24°F | April 23 | April 11 | April 4 | March 11 | October 29 | October 14 |
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.