Weather Summary: It is very early in the year for such a hot airmass to arrive. Record high temperatures are expected across western Washington tomorrow and possibly even Saturday! The snowpack has been at record levels and as it melts rapidly in the heat it is bringing record levels to our local rivers and streams.
High pressure and a thermal trough are combining to produce clear skies and record highs.
The ridge of high pressure and thermal trough will move east later Saturday which will invite a wind shift from offshore to onshore. The onshore winds will bring the cooling effect of the Pacific ocean inland. Sunday will start out with morning clouds and the afternoon sun will bring temperatures back into the 70s. Monday a disturbance will bring increasing clouds and a chance of light rain north along with cooler temperatures. The disturbance will continue to move in for widespread rain and normal temperatures on Tuesday.

Tonight: Clear. Lows in the mid 50s. North wind 10 to 15 mph.
Friday: Sunny, record heat. Highs 80s to mid 90s. The warmest temperatures are expected away from the water, around southwest Washington and in the foothills. North wind around 10 mph.
Friday Night: Mostly clear. Lows in the 50s to low 60s. North wind around 10 mph in the evening becoming light.
Saturday: Sunny. Highs in the upper 70s and 80s. Light wind becoming southwest around 10 mph in the afternoon. Expect an increase in humidity after the winds shift to onshore.
Saturday Night: Increasing high clouds. Lows in the mid 50s.
Sunday: Morning clouds, partly to mostly sunny. Highs in the upper 70s.
Monday: Increasing clouds with a chance of rain north and coast. Highs in the 60s.
Tuesday: Areas of rain. Highs in the 60s.

Rebecca Stevenson is Chief Meteorologist for KIRO 7 Eyewitness News. Stevenson holds the Seal of Approval from the American Meteorological Society (AMS) and the National Weather Association.
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