Last frost date in San Marino, California
January 8
Average last frost in spring. In an early year (1 in 10) it's over by December 20; in a late year (1 in 10) it comes after February 17.
January 7
Average first frost in fall. 1 year in 10 it comes by December 20.
A 32°F night happens here about 1 years in 10; in those years these are the usual dates.
Source: NOAA U.S. Climate Normals 1991–2020, station Pasadena (USC00046719), 2.5 miles from San Marino, elevation 864 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 20 | Jan 8 | Feb 17 |
| First frost in fall | Dec 20 | Jan 7 | Feb 14 |
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 Marino
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 Marino'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
- San Gabriel 2 mi · last frost Jan 4
- South Pasadena 3 mi · last frost Jan 8
- Pasadena 3 mi · last frost Jan 8
- Alhambra 3 mi · last frost Jan 4
- Temple City 3 mi · last frost Jan 4