SEATTLE -- Temperatures were slightly cooler Friday in Western Washington after Thursday s record-breaking heat butnot by much.

It'sstill going to be a hot afternoon, said KING 5 Meteorologist Rich Marriott. Yesterday, we had 95 degrees out at SeaTac Airport, breaking the record of 87 set in 1952 and 1985. We re going to cool off 4-5 degrees, but that still leaves us with 90 degrees as a high.

As it turned out, Sea-Tac Airport hit 92, and the temperatures soared to 94 in Carnation, Olympia, and Woodinville.

For the weekend, a weak weather system passing to the north of the state will increase the onshore winds, bringing some patchy fog and low clouds into the south Sound and the Strait Saturday morning, said Marriott. But it will still be a mostly sunny day with temperatures cooling back into the mid 70s to low 80s.

Sunday will see more morning clouds and cooler highs dropping back into the 70s to near 80 degrees. By Monday, the onshore winds will bring in clouds through most of the day and drop high temperatures into the 60s to near 70.

Related:Click here for latest weather forecast

With a heat advisory still in effect until 9 p.m. Friday, officials are reminding residents to take precautions and keep family and pets cool and safe. In extreme heat, some people are at higher risk than others, including the elderly, the very young and people with mental illness and chronic diseases. Related: Heat safety tips

Heat taking toll on Seattle power grid

About 9,300 Seattle City Light customers lost electricity in Seattle's Capitol Hill and downtown area overnight Thursday.

Utility crews discovered transformer banks had malfunctioned and were red hot at an East Pine Street substation. Seattle City Light says heat and strain and the system were likely causes. Some power was restored about an hour later.

City Light has been dealing with scattered outages. The utlity plans to use a thermal imaging device to scan the grid Friday and see if there's a larger problem.

Dozens of cooling centers open

Severalcounties around the Puget Soundhave opened up dozens of cooling centers were residents can go to cool off from the heat. Pierce County has designated several dozen buildings as cooling centers this weekto help protect people, including several dozen libraries and communities centers in the county. People are also encouraged to take advantage of movie theaters, malls and other stores that have air conditioning.

Related: Puget Sound area cooling centers

In King County, two cooling centers have opened. If you're seeking relief in Redmond, the air-conditioned Redmond Senior Center will be open to everyone Thursday and Friday from 8:30 a.m. to 9 p.m. and Friday 8:30 a.m. to 4:30 p.m. And the Federal Way Community Center, located at 876 S. 333rd Street, will be open to all citizens during the period of possible extreme hot weather.

While the public buildings are just for people, some pet stores, including the Petco in Puyallup, are inviting animals inside as well, where water dishes are ready.

It's also important to check on your elderly neighbors or people with underlying health problems. They are most at risk. And if you exercise outside, do it in the morning or evening.

KING 5's Liza Javier contributed to this report.

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