Galt, CA 95638 Frost Dates
95638, near Galt, CA: the frost window
Around 02/09 is the usual last spring frost, about 165 days away. Fall's first freeze usually shows up around 12/05, roughly 301 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 Galt, not a forecast for this year.
Stretching the season past the first frost
Galt's growing season runs out in roughly 14 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 02/09 isn't a guarantee
02/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/07 and only about 1 year in 10 sees frost after that.
Galt against the rest of the dataset
Galt's growing season runs about 301 days, ranking 3,940 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,633 of 2,555.
Learn more
Two guides worth reading on 95638: local microclimates, on what one yard in Galt can differ from the 95638 normal, and zone vs. frost date, on why Zone 9b and Galt's frost date answer different questions.