Seattle weather forecast: When chilly temperatures will start to rise

After a sunny yet cold start to the workweek, Mother Nature was expected to throw the Seattle area a warming blanket of clouds by Monday afternoon, with temperatures forecast to rise by Tuesday morning’s commute.

Highs on Tuesday will hover in the lower 40s, with lows right around 30 degrees in the Seattle area, according to the National Weather Service.

Before temperatures began to rise on Monday, Seattle experienced the coldest morning of the month. Overnight lows hovered around 27 degrees Sunday night into Monday. Temperatures dipped to a low of 25 at 6 a.m., according to the weather service.

The mercury dipped even lower, to the mid-teens, across the Olympic Peninsula and to 8 degrees at Snoqualmie Pass, NWS said.

Highs on Monday were forecast to hover around 40 degrees, with the region expected to hit “that high temperature sometime during the later part of Monday afternoon,” said Matthew Cullen, a weather-service meteorologist.

Stray showers will brush by the Olympic Peninsula and areas from Skagit County northward on Tuesday and Wednesday, with overnight lows and daytime highs continuing to rise throughout the week, according to the weather service.

By Groundhog Day on Thursday, Seattle’s expected high of 50 degrees may just signal the arrival of springlike weather.

The King County Regional Homelessness Authority announced Seattle City Hall would be open as an overnight warming shelter through the morning of Feb. 2 for 45 adults, in addition to more than a dozen other daytime warming centers throughout the city. For information on warming centers in King County, visit st.news/kingcountyshelters.

Severe-weather shelters will also be open in Bellevue, Kirkland, Redmond, Auburn, Burien, Federal Way, Kent and Maple Valley, including:

• FUSION Overnight Family Shelter in Federal Way, 1505 S. 328th St., open for all ages from 5 p.m. to 9 a.m. through the morning of Feb. 2. No pets are allowed, and snacks and water will be provided. Call 253-838-0950.
• Holy Spirit Church in Kent, 310 Third Ave. S., open 9 p.m.-7 a.m. Water and snacks will be provided.

In Snohomish County, these cold-weather shelters have opened for adults: 

• South County Cold Weather Shelter in Lynnwood, 17620 60th Ave. W., offers transportation to the shelter, with pickups and check-in 7-7:30 p.m. (9-9:30 p.m. on Wednesday). Call for later check-ins (based on availability) and if you have your own vehicle. Call 206-743-9843.
• Monroe Cold Weather Shelter, 1012 W. Main St. in Monroe, will be open for check-in 8-10 p.m. Call 425-535-0000.
• Snohomish Cold Weather Shelter, 210 Ave. B. in Snohomish, will be open for check-in 8-10 p.m. Call 425-535-0000.
• Marysville Cold Weather Shelter, 7215 51st Ave. N.E. in Marysville, will be open for check-in 7 p.m. to 9:30 p.m. Call 425-686-9272.
• Everett Cold Weather Shelter, 1616 Pacific Ave. in Everett, will be open for check-in 8-10 p.m. Call 425-740-2550.
• Everett Family Cold Weather Shelter, 5126 S. Second Ave. in Everett, will be open for check-in 4-8 p.m. Email speterson@egmission.org.

Emergency-weather shelters in Snohomish County open as needed. To see if the sites remain open, visit st.news/snoshelter.