Weather satellite and radar are showing the cold front that brought rain to our area last night moving southeast through the state. Fog and stratus will have a good chance to develop quickly after the precipitation ends by mid-morning for most Inland Northwest locations. A cold upper level low pressure system then moves through this afternoon. This new weather system will destabilize the atmosphere for a good chance of showers for the mountains, and for the lower elevations east of a line from about Davenport down to Walla Walla. The rest of us in Northcentral Washington today will enjoy mostly sunny skies by this afternoon with high temperatures in the upper 40’s to lower 50’s.
A strong, and cool northeast flow will ride down the backside of a large high pressure ridge in the Eastern Pacific which will drag some very dry air into the region. Temperatures on Wednesday will cool off 3-5 degrees from today with highs mainly in the mid to upper 40s which is still a few degrees above normal for this time of year.
On Thursday and Friday, high pressure noses into the Pacific Northwest keeping conditions seasonably cool and dry with sunny skies each day and afternoon highs in the mid 40’s. By Saturday and the upcoming weekend, the large ridge of high pressure begins to flatten ahead of the next weather system.
Mostly cloudy skies in our Saturday forecast with a 30% chance of late-night showers and afternoon high temperatures in the mid 40’s.
Maybe a leftover sprinkle or two on Sunday morning then mostly sunny skies by afternoon as the weather system moves away, highs Sunday also in the mid 40’s. More of the same for Monday with mostly sunny skies and highs in the lower to mid 40’s.