Spokane, WA 99205 Frost Dates
When can you plant in Spokane, WA?
Typically, the last spring freeze lands around 04/26, roughly 241 days out. The first fall frost typically arrives around 10/15, about 170 frost-free days later.
The USDA Plant Hardiness Zone Map puts Spokane in Zone 7a (0 to 5°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 Spokane before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Spokane's last frost
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/10 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Spokane compares
About 170 days separate Spokane's last and first frost, putting it 28,865 of 40,283 ZIP codes nationally. Within WA, it ranks 489 of 700.
Learn more
zone vs. frost date covers why Zone 7a and Spokane's frost date answer different questions. the frost range covers how to read the range around Spokane's dates instead of trusting one.