Susanville, CA 89595 Frost Dates
When can you plant in Susanville, CA?
Typically, the last spring freeze lands around 04/28, roughly 243 days out. The first fall frost typically arrives around 10/15, about 169 frost-free days later.
The USDA Plant Hardiness Zone Map puts Susanville in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 7 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.
The actual range around Susanville's last frost
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Susanville compares
About 169 days separate Susanville's last and first frost, putting it 29,366 of 40,283 ZIP codes nationally. Within CA, it ranks 2,388 of 2,555.
Learn more
zone vs. frost date covers why Zone 7b and Susanville's frost date answer different questions. the frost range covers how to read the range around Susanville's dates instead of trusting one.