Weather 9-23-20

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Weather today will be fairly quiet as the large area of low pressure that brought the Wenatchee Valley .30” of precipitation last night exits to the northeast. Northcentral Washington can expect partly to mostly cloudy skies today and cool with afternoon high temperatures in the mid to upper 60’s.

On Friday, weather models now indicate a moist frontal boundary swinging through our area with widespread rain as the upper-level jet stream quickly pushes this system east. Timing reaches Northcentral Washington in the morning and then Eastern Washington in the late morning and afternoon. Rain and cloud cover will keep temperatures a little cooler Friday compared to previously thought but windy conditions are still likely in the afternoon across the Columbia Basin and Western Plains. Cloudy skies in our Friday forecast with a 90% chance of rain and winds around 10-20 mph. This system exits Friday evening with drier air moving in for Friday night and the weekend.

On Saturday, a developing high-pressure system over California, will push the pacific moisture stream into British Columbia. Northcentral Washington can expect partly cloudy skies, light wind and afternoon highs in the mid to upper 60’s.

By Sunday, pretty much the entire Inland Northwest should be dry and warmer with mostly cloudy skies afternoon high temperatures will climb into the lower to mid-70’s.

Weather for Monday through Wednesday will feature unusually strong high pressure which will be firmly centered over the Wester U.S. This will bring clear skies, cool mornings and warm afternoons with daytime highs in the upper 70’s to lower 80’s. This warm weather pattern may well last all week, with daytime temperatures running around 10 degrees above normal.