The National Weather Service issued a special statement Monday warning of a cold front moving through Western Washington, causing possible snowfall in the mountains overnight.
Temperatures in Renton will reach highs in the 50s most of the week, with temperatures anticipated to rise to about 66 degrees on Friday and through the weekend.
Here's the statement from the NWS:
A cold front will move through Western Washington (Monday)...bringing a soaking rainfall and breezy to locally windy conditions. An upper trough will follow the front tonight and Tuesday for cool and showery weather.
The change in the weather pattern will be most significant in the mountains. The snow level will be in the 7,000 to 8,000 foot range today...with precipitation amounts of a half to one and a half inches.
The snow level will fall in the wake of the cold front tonight and be near 4,000 feet Tuesday and Tuesday night. Another one half to one and half inches of precipitation is likely tonight through Tuesday night. The higher mountain highways will have some snowfall at times...but significant accumulation on the roadways is unlikely.
People planning to venture into the backcountry should expect much cooler conditions with rain and snow. Significant snowfall accumulations are likely above 6,000 feet...especially on the Cascade volcanoes.