Auburn, CA 95602 Frost Dates
95602, near Auburn, CA: the frost window
Typically, the last spring freeze lands around 04/03, roughly 218 days out. Fall's first freeze usually shows up around 11/24, roughly 233 days after the last spring frost.
Auburn sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Auburn's growing season runs out in roughly 13 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Auburn against the rest of the dataset
At roughly 233 frost-free days, Auburn places 9,864 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,156 of 2,555.
Learn more
Two guides worth reading on 95602: the frost range, on how to read the range around Auburn's dates instead of trusting one, and local microclimates, on what one yard in Auburn can differ from the 95602 normal.