Spokane, WA 99256 Frost Dates
When can you plant in Spokane, WA?
The last spring frost here typically falls around 04/26, about 241 days from today. The first fall frost typically arrives around 10/12, about 168 frost-free days later.
Spokane sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 6 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 04/09 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 168 days separate Spokane's last and first frost, putting it 29,652 of 40,283 ZIP codes nationally. Within WA, it ranks 541 of 700.
Learn more
local microclimates covers what one yard in Spokane can differ from the 99256 normal. zone vs. frost date covers why Zone 7a and Spokane's frost date answer different questions.