Frost dates for San Diego, California
In a typical year, San Diego’s last spring frost lands around Jan 6 and the first fall frost around Dec 31, a growing season of about 359 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 10b.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Dec 13 | Dec 11 |
| 50 percent | Jan 6 | Dec 31 |
| 90 percent | Feb 5 | Jan 30 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in San Diego is typically around 70°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in San Diego
- Radish (Cherry Belle)
- Lettuce (Buttercrunch)
- Pea (Sugar Snap)
- Beet (Detroit Dark Red)
- Spinach (Space)
- Onion (Vidalia)
- Swiss chard (Bright Lights)
- Parsley (Giant of Italy)
Timing comes from the same temperature engine the app uses, run against San Diego’s normals for today.
Nearby cities
- Chula Vista, CA (around Jan 6 to Dec 31)
- Escondido, CA (around Jan 2 to Dec 30)
- Oceanside, CA (around Jan 23 to Dec 11)
- Irvine, CA (around Jan 5 to Dec 25)
- Huntington Beach, CA (around Jan 5 to Dec 25)
Row & Bed is a plant reference built around your garden: your zone, your frost dates, your forecast, and a cited page for every variety in your beds.
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