Today is shaping up to be the coolest and rainiest day that we have seen in a while as an upper level weather system moves southeastward across southern Oregon into Northern California. Much needed rainfall continues to fill the radar from east to west as moisture wraps around the backside of the low. Light to moderate precipitation can be expected across the whole Inland Northwest through the day today, with total precipitation amounts through tomorrow morning varying by location. Areas in the lower Columbia Basin can expect to receive around 0.10 inches, valleys around 0.10-0.30 inches and higher elevations could see over 0.30 inches of liquid moisture. Northcentral Washington weather today will be cloudy and a bit breezy with a 60% chance of rain this afternoon and a 50% chance tonight, highs only around 60 degrees.
The area of low pressure moves away on Friday but will leave behind some clouds and a light north breeze with afternoon highs in the upper 60’s.
Another area of low pressure will slowly slide along the Southern edge of the Inland Northwest and into the Dakotas through the weekend. Both Saturday and Sunday will be partly cloudy and warmer with a 20% chance of widely scattered showers each day with highs in the lower to mid-70’s. Sunday could be a bit breezy as well.
By Monday, a zonal flow pattern will set up across the Columbia Basin and Wenatchee Valley with mostly sunny skies through Wednesday and mild with afternoon high temperatures in the mid 70’s.