Updated Friday 11:45 p.m.
We've been running a bit cool this week, but August is about to make a nice comeback just in time for the weekend. Sunshine carried us back into the middle 70s in Seattle on Friday--which is 'near normal'--and we'll crank it up a few more degrees for your outdoor plans on Saturday. Higher pressure building in over the Eastern Pacific will clear us out and warm us up, and afternoon highs will hover on either side of 80 around the Sound.
On Sunday, another round of showers and thundershowers may pop up over the Cascade crest, so that will be something to keep an eye on due to the potential for more lightning-sparked wildfires or flash flooding near the recent burn scar zones. Most of the Sound will still max out in the upper 70s with plenty of blue sky, but we'll see a few more clouds floating around on Sunday on this side of the Cascades, too.
Thereafter, summer returns in force for the tail end of of the month. An upper ridge of high pressure will serve to clear us out, and a thermal trough (dry, hot pool of air) will work its way up the west coast from California. That will nudge temperatures into the low to middle 80s in the Central Sound by next Tuesday and Wednesday.
A marine push of air from the Pacific will allow cool, moist ocean air back in by Thursday. Look for morning clouds and afternoon clearing on Thursday, and cool down back into the more typical middle 70s late in the week.
Labor Day Weekend is looming, and it's still looking like it has the potential to get cool & showery. A little late summer cold front approaches Friday night, so we may kick off our Saturday morning with a bit of rain.
Have a wonderful weekend,
Meteorologist Shannon O'Donnell
The KOMO4 Forecast Team