Auburn, CA 95635 Frost Dates
Auburn, CA: when does the frost end?
Typically, the last spring freeze lands around 04/12, roughly 227 days out. Fall's first freeze usually shows up around 11/21, roughly 221 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
With roughly 12 weeks until Auburn's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/12 isn't a guarantee
04/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Auburn against the rest of the dataset
About 221 days separate Auburn's last and first frost, putting it 12,468 of 40,283 ZIP codes nationally. Within CA, it ranks 2,177 of 2,555.
Learn more
Before leaning on 95635's figures: zone vs. frost date explains why Zone 9b and Auburn's frost date answer different questions, while the frost range explains how to read the range around Auburn's dates instead of trusting one.