Last frost date in San Bruno, California
January 11
Average last frost in spring. In an early year (1 in 10) it's over by December 23; in a late year (1 in 10) it comes after February 12.
January 10
Average first frost in fall. 1 year in 10 it comes by December 22.
A 32°F night happens here about 2 years in 10; in those years these are the usual dates.
Source: NOAA U.S. Climate Normals 1991–2020, station Pacifica 4 Sse (USC00046599), 3.2 miles from San Bruno, elevation 475 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Dec 23 | Jan 11 | Feb 12 |
| First frost in fall | Dec 22 | Jan 10 | Feb 5 |
An early or late year is one in 10: 1 year in 10 the frost comes before the early date, and 1 year in 10 after the late date.
Frost-free days in an average year: 365
Planting calendar for San Bruno
USDA's planting table covers places whose average last freeze is between January 30 and June 10, and whose first freeze is between August 30 and December 20. San Bruno's frost dates fall outside it, so we don't give planting dates for it.
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5 (earliest safe spring and latest safe fall dates), applied to this place's NOAA frost dates. “Plants” means setting out transplants, not sowing seed. How we match the table.
Nearby in California
- Millbrae 2 mi · last frost Dec 29
- Pacifica 3 mi · last frost Jan 11
- South San Francisco 4 mi · last frost Dec 29
- Burlingame 4 mi · last frost Dec 29
- Daly City 6 mi · last frost Dec 30