Sammamish-Issaquah Weather: Rain, Wind And Heavy Mountain Snow

ISSAQUAH, WA — Western Washington is in for a bit of a soaker Friday, along with significant snowfall in the mountain passes, according to National Weather Service. While a strong windstorm appears unlikely, forecasters said gusty conditions Thursday night will continue through Friday, peaking between 20 and 25 mph around Seattle, Everett and Tacoma.

Stretches of heavy rain in the lowlands and snow in the mountains will linger through Friday night before turning more showery Saturday and Sunday.

Here are a few things to expect:

• Widespread lowland rain and mountain snow Friday, with a potential for some thunderstorms along the coast and south of Seattle.
• Wind gusts through Friday night, strongest along the coast, Hood Canal, western Whatcom and Skagit counties, areas south of Olympia and the San Juan Islands.
• Heavy snow in the Cascades through Saturday morning, likely impacting travel on Interstate 90, Stevens Pass and White Pass.
• River flooding is not expected in most areas.
• Another round of wet weather likely Monday and Tuesday.

Forecasters predict the mountains will get a healthy dose of new snow by Saturday morning, with up to 30 inches possible at Stevens Pass and at least a foot in Snoqualmie Pass. The Washington State Department of Transportation said more than a dozen plows were ready to deploy and urged travelers to consider delaying trips or prepare to take it slow and carry chains.

Temperatures in the lowlands look unlikely to change much in the coming days, with highs and lows staying in the 40s for much of the region.

Here is the 5-day weather outlook:

Sammamish

• Friday: 49°/38° (Showers)
• Saturday: 48°/38° (Rain likely)
• Sunday: 50°/40° (Rain likely)
• Monday: 49°/40° (Rain likely)
• Tuesday: 48°/38° (Chance of rain)

Issaquah

• Friday: 51°/40° (Showers)
• Saturday: 50°/41° (Rain likely)
• Sunday: 52°/42° (Rain likely)
• Monday: 51°/42° (Rain likely)
• Tuesday: 51°/41° (Chance of rain)

After the weekend, forecasters are tracking another potential weather system that could mean more heavy rain for Puget Sound. The second round of weather may not include significant mountain snow, but more details will be shared as the forecast evolves.