Nevada City, CA 95925 Frost Dates
95925, near Nevada City, CA: the frost window
Typically, the last spring freeze lands around 05/04, roughly 249 days out. Fall's first freeze usually shows up around 10/30, roughly 174 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Nevada City in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Nevada City's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Nevada City's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/31 and only about 1 year in 10 sees frost after that.
Nevada City against the rest of the dataset
About 174 days separate Nevada City's last and first frost, putting it 27,467 of 40,283 ZIP codes nationally. Within CA, it ranks 2,372 of 2,555.
Learn more
Two guides worth reading on 95925: local microclimates, on what one yard in Nevada City can differ from the 95925 normal, and zone vs. frost date, on why Zone 9a and Nevada City's frost date answer different questions.