Last frost date in Windsor, 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 2.
November 20
Average first frost in fall. 1 year in 10 it comes by November 1.
Source: NOAA U.S. Climate Normals 1991–2020, station Santa Rosa Sonoma Co AP (USW00023213), 2.6 miles from Windsor, elevation 114 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 2 |
| First frost in fall | Nov 1 | Nov 20 | Dec 10 |
Frost-free days in an average year: 262
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 12 | Nov 3 |
| Frost (32°F) | Every year | Mar 2 | Nov 20 |
| Hard freeze (28°F) | 9 years in 10 | Jan 23 | Dec 5 |
Nights at 32°F or colder in an average year: 31
What to plant now in Windsor
- 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 Windsor: March 2
- Fall planting calendar for an average first frost around November 20 Windsor: November 20
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
- Healdsburg 6 mi · last frost Feb 15
- Santa Rosa 9 mi · last frost Feb 25
- Petaluma 23 mi · last frost Feb 28
- Sonoma 26 mi · last frost Mar 2
- Clearlake 30 mi · last frost Apr 10
Updated