Spokane, WA 99207 Frost Dates
Frost dates for Spokane, WA, ZIP 99207
The last spring frost here typically falls around 04/26, about 241 days from today. The first fall frost typically arrives around 10/15, about 170 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
Zone 7a around Spokane has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
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 28,866 of 40,283 ZIP codes nationally. Within WA, it ranks 490 of 700.
Learn more
zone vs. frost date explains why Zone 7a and Spokane's frost date answer different questions, and the frost range explains how to read the range around Spokane's dates instead of trusting one.