Colville, WA 99114 Frost Dates
When can you plant in Colville, WA?
The last spring frost here typically falls around 05/02, about 247 days from today. The first fall frost typically arrives around 10/02, about 153 frost-free days later.
Zone 6a (-10 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 Colville, not a forecast for this year.
What to do before the first frost
About 5 weeks of growing season left in Colville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Colville's last frost
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Colville compares
At roughly 153 frost-free days, Colville places 34,528 of 40,283 ZIP codes in this dataset. Within WA, it ranks 588 of 700.
Learn more
zone vs. frost date covers why Zone 6a and Colville's frost date answer different questions. the frost range covers how to read the range around Colville's dates instead of trusting one.