A dry northerly flow will continue today across Northcentral Washington as the large high-pressure ridge in the eastern Pacific begins to nose onto the west coast. Expect clouds to continue to thin and dissipate this morning for a mostly sunny afternoon. Daytime temperatures will continue to be several degrees below our average for this time of year at 66 degrees. Valley temperatures today will top out in the 50s to low 60s. Given our decreasing clouds tonight and little if any fog development, tonight will be quite chilly, about 3 to 7 degrees below average. Northcentral Washington lows tonight will drop down into the upper 30’s.
More of the same for Thursday with mostly sunny skies and highs in the lower to mid- 60’s.
The passage of an upper level trough through British Columbia on Friday is expected to bring some mid and high clouds to the Inland Northwest on Friday, mainly in Eastern Washington. At this time, it looks like precipitation chances will remain north of the Canadian border. High temps on Friday are expected to reach the mid to upper 60’s which is pretty close to average for mid-October. However, by mid to late afternoon, surface high pressure building over southern British Columbia will likely yield a strong enough northerly gradient to channel 10 to 20 mph winds down the Okanogan Valley. North winds should peak in the evening and overnight hours in the 15 to 25 mph range in places like Omak, Waterville, and Ephrata. Elsewhere, north winds should generally be in the 5 to 15 mph range.
Meanwhile, as high-pressure remains stationary in the Eastern Pacific, our weather for the weekend and into the next week looks very nice. Northcentral Washington can expect sunny skies over the next 6 days with afternoon high temperatures in the mid to upper 60’s.