Anderson, CA 96059 Frost Dates
Anderson, CA: when does the frost end?
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.
The USDA Plant Hardiness Zone Map puts Anderson in Zone 9a (20 to 25°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
With roughly 3 weeks until Anderson's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
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
Anderson's growing season runs about 102 days, ranking 39,640 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 2,514 of 2,555.
Learn more
Before leaning on 96059's figures: local microclimates explains what one yard in Anderson can differ from the 96059 normal, while zone vs. frost date explains why Zone 9a and Anderson's frost date answer different questions.