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 92025
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 92025 in zone 10a (the coldest night of a typical year: 30 to 35°F).
The nearest station, San Pasqual Animal Park, CA, is 2 miles from the ZIP's center: its last spring frost comes after February 2 in half of years and after March 4 in one year in ten. By the USDA's method its plant hardiness zone is 9b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| San Pasqual Animal Park, CA | 2 mi | 420 ft | February 2 | March 4 | December 7 | 9b |
| Escondido, CAEscondido #2 | 4 mi | 600 ft | January 2 | February 4 | December 30 | – |
| Rancho Bernardo, CA | 5 mi | 690 ft | January 5 | February 1 | January 2 | 10a |
| Ramona, CARamona Airport | 7 mi | 1,393 ft | March 19 | April 10 | November 23 | 9a |
| Ramona Fire Dept, CA | 9 mi | 1,470 ft | March 4 | April 10 | December 4 | – |
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 San Pasqual Animal Park
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 5 | March 20 | March 5 | January 30 | November 23 | November 6 |
| 32°F | March 4 | February 17 | February 2 | December 31 | December 7 | November 22 |
| 28°F (hard freeze) | February 7 | January 18 | January 5 | December 15 | December 19 | December 2 |
| 24°F | January 17 | January 2 | December 28 | December 9 | December 24 | December 5 |
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.