Susanville, CA 96071 Frost Dates
96071, near Susanville, CA: the frost window
Typically, the last spring freeze lands around 06/09, roughly 285 days out. 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 Susanville in Zone 7a (0 to 5°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
Susanville'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.
Susanville against the rest of the dataset
Susanville's growing season runs about 102 days, ranking 39,639 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 2,513 of 2,555.
Learn more
Two guides worth reading on 96071: the frost range, on how to read the range around Susanville's dates instead of trusting one, and local microclimates, on what one yard in Susanville can differ from the 96071 normal.