Sacramento, CA 95811 Frost Dates
95811, near Sacramento, CA: the frost window
Around 01/12 is the usual last spring frost, about 137 days away. Fall's first freeze usually shows up around 12/16, roughly 341 days after the last spring frost.
Zone 9b (25 to 30°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 Sacramento, not a forecast for this year.
Stretching the season past the first frost
Sacramento's growing season runs out in roughly 16 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 01/12 isn't a guarantee
01/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/18 and only about 1 year in 10 sees frost after that.
Sacramento against the rest of the dataset
At roughly 341 frost-free days, Sacramento places 2,565 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,123 of 2,555.
Learn more
Two guides worth reading on 95811: zone vs. frost date, on why Zone 9b and Sacramento's frost date answer different questions, and the frost range, on how to read the range around Sacramento's dates instead of trusting one.