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 92011
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 92011 in zone 10b (the coldest night of a typical year: 35 to 40°F).
The nearest station, Oceanside, CA, is 8 miles from the ZIP's center: its last spring frost comes after January 23 in half of years and after February 22 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 |
|---|---|---|---|---|---|---|
| Oceanside, CAOceanside Municipal Airport | 8 mi | 28 ft | January 23 | February 22 | December 11 | 9b |
| Vista, CA | 10 mi | 430 ft | January 30 | March 16 | January 7 | 10a |
| Escondido, CAEscondido #2 | 12 mi | 600 ft | January 2 | February 4 | December 30 | – |
| Camp Pendleton Marine Corps Air Station, CA | 14 mi | 75 ft | February 16 | March 18 | December 8 | – |
| Rancho Bernardo, CA | 14 mi | 690 ft | January 5 | February 1 | January 2 | 10a |
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 Oceanside
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 6 | March 11 | February 27 | January 29 | November 24 | November 7 |
| 32°F | February 22 | February 4 | January 23 | December 22 | December 11 | November 21 |
| 28°F (hard freeze) | January 31 | January 10 | December 31 | December 9 | December 23 | December 3 |
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.