Another mostly dry air mass can be expected over Northcentral Washington today bringing sunny skies and afternoon high temperatures in the upper 70’s to near 80 degrees. We will also see northwest winds aloft continue today around 15 mph.
Later tonight into Friday clouds begin to build in ahead of the next weather system buckling the flow aloft from a more southwest to south direction. Clouds increase overnight with a mid-level cold frontal band of clouds crossing the Cascades in the afternoon. Friday’s weather will be mostly cloudy with a light north wind, highs once again mainly in the upper 70’s. Precipitation potential goes up to 30% Friday night and becomes more widespread even to the Cascades as the frontal band of moisture builds and deepens in Eastern Washington. This will be the beginning of the end of the recent nice run of weather as cooler and wetter weather will follow into the coming days.
Mostly sunny skies to start the day on Saturday with increasing clouds in the afternoon and cooler temperatures expected with afternoon highs in the upper 60’s to lower 70’s.
A broad, slow-moving upper level trough will produce cooler than average temperatures and periods of wet weather on Sunday and into next week. Under partly to mostly cloudy skies and breezy conditions, expect temperatures on Sunday to only reach the mid to upper 60’s.
Mostly sunny skies expected on Monday with breezy winds, afternoon highs will remain below normal in the lower 70’s. Our slow-moving weekend trough will exit the region Monday night, but another moisture laden weather system is forecast to arrive on its heels Tuesday. The progressive nature of this front will likely lead to the best precipitation chances of precipitation over the Cascades and the mountainous terrain of north Idaho. Central and eastern Washington generally don`t get much measurable precipitation with this type of pattern this late in the Spring season.
Mostly cloudy skies on Tuesday and Wednesday with a 30% chance of scattered showers Tuesday and a 20% chance on Wednesday, highs only in the lower 70’s at first warming to into the upper 70’s on Wednesday.