Weather satellite indicates dry, northwest flow aloft over Northcentral Washington this morning under the eastern flank of a short wave high pressure ridge. This flow is dragging a shot of cool Canadian continental air through the northern mountain gaps and into the Columbia Basin. This intrusion of dry, cool air should help erode the pockets of fog which have developed overnight in some locations. All of this points to a dry weather day today with partly cloudy to mostly sunny skies seasonably cool with afternoon high temperatures today in the mid to upper 40’s.
There is good weather model agreement that a short wave trough will migrate through Northcentral Washington during the day Tuesday with mostly cloudy skies, a 20% chance of widely scattered showers and afternoon highs in the mid to upper 40’s.
An upper level ridge of high pressure is expected to strengthen and move over the Wenatchee Valley Wednesday and Thursday for dry weather and patchy morning fog each day with highs remaining in the mid to upper 40’s.
A weak weather system tracks through Friday with mostly cloudy skies and a 30% chance for a chance of rain with snow levels ranging from 4000 to 6000 feet.
A short wave ridge of high pressure briefly moves in on Saturday with more fog and stratus likely in the morning mostly cloudy skies and high temperatures warming to near 50 degrees.
The dry weather is short lived though as weather models depict the potential for a wetter day Sunday as an atmospheric river of moisture takes aim at the Inland Northwest. Expect cloudy skies on Sunday with a 40% chance of rain and mild high temperatures in the lower to mid-50’s.