Yuba City, CA 95993 Frost Dates
Frost dates for Yuba City, CA, ZIP 95993
Around 01/15 is the usual last spring frost, about 140 days away. The first fall frost typically arrives around 12/12, about 333 frost-free days later.
The USDA Plant Hardiness Zone Map puts Yuba City in Zone 9b (25 to 30°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
Zone 9b around Yuba City has about 15 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 01/15 isn't a guarantee
01/15 is the middle of 30 years of NOAA records, not a promise. Plant by 02/18 and you're betting against frost in roughly 9 years out of 10. 12/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Yuba City compares
About 333 days separate Yuba City's last and first frost, putting it 2,820 of 40,283 ZIP codes nationally. Within CA, it ranks 1,285 of 2,555.
Learn more
local microclimates explains what one yard in Yuba City can differ from the 95993 normal, and zone vs. frost date explains why Zone 9b and Yuba City's frost date answer different questions.