Sutter Creek, CA 95689 Frost Dates
Sutter Creek, CA: when does the frost end?
Around 03/31 is the usual last spring frost, about 215 days away. Fall's first freeze usually shows up around 11/21, roughly 237 days after the last spring frost.
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 Sutter Creek, not a forecast for this year.
Stretching the season past the first frost
With roughly 12 weeks until Sutter Creek's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Sutter Creek's last frost
03/31 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/23 and only about 1 year in 10 sees frost after that.
Sutter Creek against the rest of the dataset
Sutter Creek's growing season runs about 237 days, ranking 9,115 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 2,138 of 2,555.
Learn more
Before leaning on 95689's figures: zone vs. frost date explains why Zone 9a and Sutter Creek's frost date answer different questions, while the frost range explains how to read the range around Sutter Creek's dates instead of trusting one.