A steady rain looks to move into Seattle for Thursday after showers on Tuesday and Wednesday.
Snow and frequent showers will be more prominent in the Cascade Range.
"It'll dry out Friday with high pressure building in briefly and some sun will remain in the forecast for the start of the weekend," AccuWeather.com Meteorologist Brian Edwards said.
By the weekend, there will be intervals of clouds and sun with temperatures remaining in the high 50s to low 60s.
The late-season swelter will continue along much of the Atlantic Seaboard through the week as tens of millions head back to school and work.
Tropical depression five has formed in the southwestern Gulf of Mexico's Bay of Campeche and will continue its west-northwest path during the next couple of days.
A second volcanic eruption occurred on Sunday morning in Iceland in the same area that had one on Friday.
Severe thunderstorms will threaten holiday festivities across parts of the Midwest and central Plains to close out the extended Labor Day weekend.
While flooding is a threat, monsoonal rains will be beneficial for most areas across northwest India this week.
Gusty winds, large hail and power outages occurred Sunday into Monday morning in the north-central United States.
Washington Co., IA (1897)
Hail fell and drifted in piles 6 feet deep in Washington County.
Yuma, AZ (1950)
123 degrees - hottest temperature ever in Yuma. Yuma is the hottest city in the U.S.
Los Angeles, CA (1955)
110 degrees, hottest day ever in September. This mark was tied September 4, 1988.