Weather 10-4-21 – NCWLIFE
A broad southwest flow will continue as a low pressure trough moves along the Canadian coast and toward the Pacific Northwest. The main impact over the next 2 days will be the passage of periods of medium and high humidity. There will be enough cloud breaks to keep central and eastern Washington above normal in temperature for the next two days. The weather forecast for north-central Washington today calls for mostly cloudy and mild skies with highs this afternoon around 70 degrees. Mainly cloudy for Tuesday also with highs again around 70 degrees. This is probably the last 70 degree days that we will see this year. Also expect increased southwest winds on Tuesday afternoon with gusts of 15 to 25 mph in the Okanogan Valley, Columbia Basin and the Waterville Plateau.
An elevation trough and associated cold front will continue to cross the region on Wednesday. Precipitation will be light, showers and confined to the Cascades and mountains of northeast Washington. The rest of the region will remain dry with overcast skies and blustery southwest winds with the frontal passage. The most notable feature of this front will be the dramatic change in temperatures on Wednesday. Afternoon highs will cool from 10 to 20 with extended forecasts projecting PNW to below average temperatures over the next 14 days. Partly cloudy skies for Wednesday and much cooler with afternoon highs in the lower 60s.
Cool and unstable weather will continue for the remainder of the week and into the weekend as the upper level trough digs along the west coast.
Thursday and Friday will be partly cloudy to mostly sunny and cool with highs in the lower 60s.
A robust weather system moves later on Saturday, accompanied by stronger upper-level dynamics and better humidity to move southeast through the region. There is growing confidence in widespread precipitation and windy to gusty winds with this system. Snow levels above the Cascades will drop below 5,000 feet during the day Sunday and to less than 3,000 feet Sunday evening. Weather for Saturday, growing clouds and cool with high afternoon temperatures in the mid-60s. On Sunday the precipitation moves, bringing 40% chance of rain and cool temperatures with highs of around 60 degrees.