A deep, cold upper level trough of lower pressure is churning off of the western British Columbia coastline this morning. Through much of this morning into the early afternoon hours, we will see scattered showers developing ahead of the front across the Inland Northwest. Northcentral Washington weather today will be mostly cloudy with isolated showers, highs generally in the upper 60’s.
Colder air behind the front, will push in dropping snow levels down to around 5,000 feet by Tuesday morning across the Cascades into the Okanogan Highlands. The upper level trough will shift in over the region on Tuesday resulting in a conditionally unstable atmosphere with convective showers developing in the afternoon with cooler temperatures. Forecast tomorrow will be partly cloudy and breezy with afternoon highs only in the lower 60’s.
Increasing clouds on Wednesday with a 30% chance of evening showers with highs in the mid-60’s.
Another weather system approaches Thursday brining clouds and a 60% chance of rain with high temperatures in the upper 60’s.
The weekend is expected to be marked by the influence of a ridge of high pressure as it shows some slight amplification which allows for a dry forecast with a warming trend allowing for temperatures to rise again a bit above seasonal normals on both Saturday and Sunday. Friday through Sunday expect mostly sunny skies and warmer temperatures with highs Friday around 70 degrees and then into the lower to mid-70’s on Saturday and Sunday.