Last frost date in Sonoma, California
March 2
Average last frost in spring. In an early year (1 in 10) it's over by January 27; in a late year (1 in 10) it comes after April 5.
November 27
Average first frost in fall. 1 year in 10 it comes by November 6.
Source: NOAA U.S. Climate Normals 1991–2020, station Sonoma (USC00048351), 0.6 miles from Sonoma, elevation 97 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Jan 27 | Mar 2 | Apr 5 |
| First frost in fall | Nov 6 | Nov 27 | Dec 21 |
Frost-free days in an average year: 270
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 8 | Nov 8 |
| Frost (32°F) | Every year | Mar 2 | Nov 27 |
| Hard freeze (28°F) | 9 years in 10 | Jan 20 | Dec 14 |
Nights at 32°F or colder in an average year: 21
What to plant now in Sonoma
- Swiss chardJune 1 – Nov 1Now
- Celery and celeriac plantsAug 1 – Dec 1Now
- BeetsSept 1 – Dec 15Now
- Cabbage plantsSept 1 – Dec 31Now
- Chinese cabbageSept 1 – Nov 1Now
- Collards plantsSept 1 – Dec 1Now
- EndiveSept 1 – Nov 15Now
- Florence fennelSept 1 – Nov 15Now
- GarlicSept 1 – Nov 15Now
- Head lettuce plantsSept 1 – Dec 1Now
- KaleSept 1 – Dec 1Now
- KohlrabiSept 1 – Dec 1Now
- Leaf lettuceSept 1 – Dec 1Now
- LeeksSept 1 – Nov 1Now
- Mustard greensSept 1 – Dec 1Now
- Onion seedSept 1 – Nov 1Now
- ParsleySept 1 – Dec 31Now
- ParsnipsSept 1 – Nov 15Now
- RadishesSept 1 – Dec 31Now
- RutabagaSept 1 – Nov 15Now
- SorrelSept 1 – Nov 15Now
- TurnipsSept 1 – Nov 15Now
- CarrotsSept 15 – Dec 1Now
- DandelionSept 15 – Dec 15Now
- Corn saladOct 1 – Dec 31Now
- Garden peasOct 1 – Dec 31Now
- Onion plants plantsOct 1 – Dec 31Now
- SpinachOct 1 – Dec 31Now
- Upland cressOct 1 – Dec 31Now
- Chervil and chivesNov 1 – Dec 31Soon
- Onion setsNov 1 – Dec 31Soon
- Spring planting calendar for an average last frost around February 28 Sonoma: March 2
- Fall planting calendar for an average first frost around November 30 Sonoma: November 27
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in California
- Napa 9 mi · last frost Feb 12
- Petaluma 10 mi · last frost Feb 28
- American Canyon 13 mi · last frost Mar 5
- Vallejo 17 mi · last frost Jan 17
- Santa Rosa 17 mi · last frost Feb 25
Updated