Last frost date in Petaluma, California
February 28
Average last frost in spring. In an early year (1 in 10) it's over by January 24; in a late year (1 in 10) it comes after April 6.
November 25
Average first frost in fall. 1 year in 10 it comes by November 9.
Source: NOAA U.S. Climate Normals 1991–2020, station Petaluma AP (USC00046826), 1.6 miles from Petaluma, elevation 20 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 24 | Feb 28 | Apr 6 |
| First frost in fall | Nov 9 | Nov 25 | Dec 16 |
Frost-free days in an average year: 271
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 6 | Nov 10 |
| Frost (32°F) | Every year | Feb 28 | Nov 25 |
| Hard freeze (28°F) | 9 years in 10 | Jan 17 | Dec 9 |
Nights at 32°F or colder in an average year: 21
What to plant now in Petaluma
- Collards plantsAug 25 – Nov 1Now
- BeetsSept 1 – Dec 1Now
- Cabbage plantsSept 1 – Dec 1Now
- CarrotsSept 1 – Nov 1Now
- DandelionSept 1 – Nov 1Now
- Head lettuce plantsSept 1 – Nov 1Now
- Leaf lettuceSept 1 – Nov 1Now
- LeeksSept 1 – Nov 1Now
- Mustard greensSept 1 – Dec 1Now
- Onion seedSept 1 – Nov 1Now
- ParsleySept 1 – Dec 31Now
- RadishesSept 1 – Dec 1Now
- TurnipsSept 1 – Nov 15Now
- Corn saladOct 1 – Dec 1Now
- Garden peasOct 1 – Dec 1Now
- Onion plants plantsOct 1 – Dec 31Now
- SpinachOct 1 – Dec 1Now
- Upland cressOct 1 – Dec 1Now
- Chervil and chivesNov 1 – Dec 31Soon
- Onion setsNov 1 – Dec 31Soon
- Spring planting calendar for an average last frost around February 28 Petaluma: February 28
- Fall planting calendar for an average first frost around November 20 Petaluma: November 25
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
- Sonoma 10 mi · last frost Mar 2
- Santa Rosa 15 mi · last frost Feb 25
- Napa 18 mi · last frost Feb 12
- San Rafael 19 mi · last frost Jan 11
- American Canyon 21 mi · last frost Mar 5
Updated