Carson, CA 90746 Frost Dates
When can you plant in Carson, CA?
The last spring frost here typically falls around 01/09, about 134 days from today. The first fall frost typically arrives around 01/05, about 365 frost-free days later.
The USDA Plant Hardiness Zone Map puts Carson in Zone 10b (35 to 40°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 19 weeks of growing season left in Carson before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
01/09 is the middle of 30 years of NOAA records, not a promise. Plant by 02/24 and you're betting against frost in roughly 9 years out of 10. 12/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Carson compares
About 365 days separate Carson's last and first frost, putting it 573 of 40,283 ZIP codes nationally. Within CA, it ranks 250 of 2,555.
Learn more
zone vs. frost date covers why Zone 10b and Carson's frost date answer different questions. the frost range covers how to read the range around Carson's dates instead of trusting one.