Last frost date in Concord, California
January 9
Average last frost in spring. In an early year (1 in 10) it's over by December 16; in a late year (1 in 10) it comes after February 12.
December 14
Average first frost in fall. 1 year in 10 it comes by November 28.
A 32°F night happens here about 8 years in 10; in those years these are the usual dates.
Source: NOAA U.S. Climate Normals 1991–2020, station Concord Buchanan Fld (USW00023254), 3.2 miles from Concord, elevation 18 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Dec 16 | Jan 9 | Feb 12 |
| First frost in fall | Nov 28 | Dec 14 | Jan 16 |
An early or late year is one in 10: 1 year in 10 the frost comes before the early date, and 1 year in 10 after the late date.
Frost-free days in an average year: 343
Planting calendar for Concord
Fall planting
USDA dates for places whose average first freeze is about December 10 (Concord: December 14).
- SoybeansJune 1 – July 30 (past for this year)
- Summer squashJune 1 – Sept 15 (past for this year)
- Sweet potatoesJune 1 – July 1 (past for this year)
- Swiss chardJune 1 – Dec 1Now
- Black-eyed peasJuly 1 – Sept 20 (past for this year)
- Broccoli plantsAug 1 – Nov 1Now
- Brussels sprouts plantsAug 1 – Nov 1Now
- Eggplant plantsAug 1 – Sept 30 (past for this year)
- OkraAug 1 – Oct 1 (past for this year)
- PotatoesAug 1 – Sept 15 (past for this year)
- RadishesAug 1 – Sept 15 (past for this year)
- Winter squashAug 1 – Sept 1 (past for this year)
- CucumbersAug 15 – Oct 1 (past for this year)
- Peppers plantsAug 15 – Oct 1 (past for this year)
- SalsifyAug 15 – Oct 15 (past for this year)
- TomatoesAug 15 – Oct 1 (past for this year)
- Witloof chicoryAug 15 – Oct 15 (past for this year)
- BeetsSept 1 – Dec 31Now
- Cabbage plantsSept 1 – Dec 31Now
- Cauliflower plantsSept 1 – Oct 20 (past for this year)
- Celery and celeriac plantsSept 1 – Dec 31Now
- Chinese cabbageSept 1 – Nov 15Now
- Collards plantsSept 1 – Dec 31Now
- EndiveSept 1 – Dec 31Now
- Florence fennelSept 1 – Dec 1Now
- KaleSept 1 – Dec 31Now
- LeeksSept 1 – Nov 1Now
- Lima beansSept 1 – 30 (past for this year)
- Mustard greensSept 1 – Dec 1Now
- Onion seedSept 1 – Nov 1Now
- ParsnipsSept 1 – Dec 1Now
- Snap beansSept 1 – 30 (past for this year)
- SorrelSept 1 – Dec 15Now
- CarrotsSept 15 – Dec 1Now
- GarlicSept 15 – Nov 15Now
- Head lettuce plantsSept 15 – Dec 31Now
- KohlrabiSept 15 – Dec 31Now
- Leaf lettuceSept 15 – Dec 31Now
- ParsleySept 15 – Dec 31Now
- ShallotsSept 15 – Nov 1Now
- Corn saladOct 1 – Dec 31Now
- DandelionOct 1 – Dec 31Now
- Garden peasOct 1 – Dec 31Now
- Onion plants plantsOct 1 – Dec 31Now
- RutabagaOct 1 – Nov 15Now
- SpinachOct 1 – Dec 31Now
- TurnipsOct 1 – Dec 1Now
- Upland cressOct 1 – Dec 31Now
- Chervil and chivesNov 1 – Dec 31Soon
- Onion setsNov 1 – Dec 31Soon
USDA lists horseradish as generally spring-planted here.
Spring planting
Concord's average last frost falls outside the dates USDA's planting table covers, so we don't give spring planting dates here.
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5 (earliest safe spring and latest safe fall dates), applied to this place's NOAA frost dates. “Plants” means setting out transplants, not sowing seed. How we match the table.
Nearby in California
- Pleasant Hill 4 mi · last frost Jan 7
- Clayton 4 mi · last frost Mar 8
- Walnut Creek 5 mi · last frost Jan 7
- Martinez 6 mi · last frost Feb 28
- Pittsburg 6 mi · last frost Jan 12