Nevada City, CA 95922 Frost Dates
Frost dates for Nevada City, CA, ZIP 95922
Around 05/04 is the usual last spring frost, about 249 days away. The first fall frost typically arrives around 10/30, about 174 frost-free days later.
Zone 9a (20 to 25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Nevada City, not a forecast for this year.
What to do before the first frost
Zone 9a around Nevada City has about 9 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.
How much risk comes with planting early here
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/18 and you're betting against frost in roughly 9 years out of 10. 05/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Nevada City compares
Nevada City's growing season runs about 174 days, ranking 27,466 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 2,371 of 2,555.
Learn more
local microclimates explains what one yard in Nevada City can differ from the 95922 normal, and zone vs. frost date explains why Zone 9a and Nevada City's frost date answer different questions.