Frost dates for Vallejo, California
In a typical year, Vallejo’s last spring frost lands around Jan 17 and the first fall frost around Dec 27, a growing season of about 344 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 9b.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Dec 23 | Dec 4 |
| 50 percent | Jan 17 | Dec 27 |
| 90 percent | Mar 4 | Feb 4 |
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 Vallejo is typically around 69°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Vallejo
- Beet (Detroit Dark Red)
- Spinach (Space)
- Onion (Vidalia)
- Swiss chard (Bright Lights)
- Parsley (Giant of Italy)
- Kale (Lacinato)
- Dill (Bouquet)
- Chives (Common Chives)
Timing comes from the same temperature engine the app uses, run against Vallejo’s normals for today.
Nearby cities
- Richmond, CA (around Jan 4 to Jan 2)
- Concord, CA (around Jan 9 to Dec 14)
- Fairfield, CA (around Jan 15 to Dec 14)
- Berkeley, CA (around Jan 3 to Jan 1)
- Oakland, CA (around Jan 3 to Jan 1)
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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