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 92307
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 92307 in zone 8b (the coldest night of a typical year: 15 to 20°F).
The nearest station, Victorville, CA, is 10 miles from the ZIP's center: its last spring frost comes after March 18 in half of years and after April 12 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 |
|---|---|---|---|---|---|---|
| Victorville, CA | 10 mi | 2,880 ft | March 18 | April 12 | November 11 | 8b |
| Hesperia, CA2 mi E | 13 mi | 3,055 ft | February 28 | April 3 | December 1 | – |
| Lake Arrowhead, CA | 23 mi | 5,205 ft | May 5 | May 31 | November 2 | – |
| Barstow station, CA | 23 mi | 2,220 ft | February 22 | March 24 | November 23 | 9a |
| Big Bear Lake, CA | 26 mi | 6,753 ft | May 27 | June 9 | October 4 | 7b |
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 Victorville
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) | April 30 | April 20 | April 11 | March 22 | November 1 | October 16 |
| 32°F | April 12 | March 31 | March 18 | February 23 | November 11 | October 27 |
| 28°F (hard freeze) | March 19 | March 2 | February 22 | January 27 | November 24 | November 7 |
| 24°F | February 25 | February 9 | January 29 | December 24 | December 7 | November 16 |
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.