Last frost date in Clearlake, California
April 10
Average last frost in spring. In an early year (1 in 10) it's over by March 24; in a late year (1 in 10) it comes after April 30.
November 6
Average first frost in fall. 1 year in 10 it comes by October 24.
Source: NOAA U.S. Climate Normals 1991–2020, station Clearlake 4 SE (USC00041806), 4.3 miles from Clearlake, elevation 1,349 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 24 | Apr 10 | Apr 30 |
| First frost in fall | Oct 24 | Nov 6 | Nov 20 |
Frost-free days in an average year: 209
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 30 | Oct 27 |
| Frost (32°F) | Every year | Apr 10 | Nov 6 |
| Hard freeze (28°F) | Every year | Mar 14 | Nov 21 |
Nights at 32°F or colder in an average year: 72
What to plant now in Clearlake
- Mustard greensAug 15 – Nov 1Now
- Garden peasSept 1 – Nov 1Now
- ParsleySept 1 – Nov 15Now
- RadishesSept 1 – Nov 15Now
- SpinachSept 15 – Nov 1Now
- Corn saladOct 1 – Dec 1Now
- Onion setsOct 1 – Dec 1Now
- Upland cressOct 1 – Dec 1Now
- Asparagus plantsDec 1 – Jan 1Soon
- Spring planting calendar for an average last frost around April 10 Clearlake: April 10
- Fall planting calendar for an average first frost around November 10 Clearlake: November 6
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 26 mi · last frost Feb 15
- Windsor 30 mi · last frost Mar 2
- Ukiah 33 mi · last frost Mar 19
- Santa Rosa 36 mi · last frost Feb 25
- Sonoma 47 mi · last frost Mar 2
Updated