Seattle, Washington – Rain and a growing snow risk could impact Washington Feb. 18-22, with cooler temperatures increasing lowland mix potential.
According to the National Weather Service 6-10 Day Outlook issued Thursday, Feb. 12, precipitation across Washington is leaning above normal, with a 60-70% probability of wetter-than-average conditions during the Feb. 18-22 period. At the same time, temperatures are favored to trend below normal statewide.
Western Washington, including Seattle, Tacoma and Everett, is expected to see periods of steady rain. However, with cooler air in place, snow levels could lower, increasing the potential for mixed precipitation in foothill communities.
The Cascades and higher elevations, including Snoqualmie Pass and Stevens Pass, may see accumulating snowfall during the period. Eastern Washington, including Spokane and the Columbia Basin, could also experience rain changing to snow if temperatures drop sufficiently.
The combination of above-normal precipitation probabilities and below-normal temperatures raises the risk of travel impacts, particularly across mountain passes and higher terrain.
For commuters and college students returning after President’s Day week, fluctuating rain and snow could create slick conditions along Interstate 5, Interstate 90 and U.S. Highway 2, especially during overnight and early morning hours.
The National Weather Service notes that 6-10 day outlooks reflect probability trends rather than exact storm totals or snowfall amounts. Residents are encouraged to monitor updated forecasts for refined timing, snow levels and accumulation estimates as the period approaches.
