Sonora, CA 95335 Frost Dates
95335, near Sonora, CA: the frost window
Around 05/02 is the usual last spring frost, about 247 days away. Fall's first freeze usually shows up around 11/04, roughly 183 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Sonora in Zone 8a (10 to 15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Sonora's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Sonora's last frost
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/29 and only about 1 year in 10 sees frost after that.
Sonora against the rest of the dataset
Sonora's growing season runs about 183 days, ranking 23,848 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 2,331 of 2,555.
Learn more
Two guides worth reading on 95335: local microclimates, on what one yard in Sonora can differ from the 95335 normal, and zone vs. frost date, on why Zone 8a and Sonora's frost date answer different questions.