Anderson, CA 96088 Frost Dates
96088, near Anderson, CA: the frost window
Around 06/09 is the usual last spring frost, about 285 days away. Fall's first freeze usually shows up around 09/21, roughly 102 days after the last spring frost.
Anderson 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
Anderson's growing season runs out in roughly 3 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 06/09 isn't a guarantee
06/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/27 and only about 1 year in 10 sees frost after that.
Anderson against the rest of the dataset
At roughly 102 frost-free days, Anderson places 39,641 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,515 of 2,555.
Learn more
Two guides worth reading on 96088: local microclimates, on what one yard in Anderson can differ from the 96088 normal, and zone vs. frost date, on why Zone 9b and Anderson's frost date answer different questions.