Susanville, CA 95947 Frost Dates
When can you plant in Susanville, CA?
Around 05/18 is the usual last spring frost, about 263 days away. The first fall frost typically arrives around 10/08, about 143 frost-free days later.
Zone 7b (5 to 10°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 Susanville, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Susanville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 06/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Susanville compares
At roughly 143 frost-free days, Susanville places 36,507 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,439 of 2,555.
Learn more
the frost range covers how to read the range around Susanville's dates instead of trusting one. local microclimates covers what one yard in Susanville can differ from the 95947 normal.