Spokane, WA 99201 Frost Dates
When can you plant in Spokane, WA?
Around 04/26 is the usual last spring frost, about 241 days away. The first fall frost typically arrives around 10/15, about 170 frost-free days later.
Zone 7a (0 to 5°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 Spokane, not a forecast for this year.
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
Spokane's growing season runs about 170 days, ranking 28,862 of 40,283 US ZIP codes measured here, longest to shortest. Within WA, it ranks 486 of 700.
Learn more
the frost range covers how to read the range around Spokane's dates instead of trusting one. local microclimates covers what one yard in Spokane can differ from the 99201 normal.