Today will be a hot and dry weather day across Northcentral Washington under a southwest flow ahead of an incoming cold front. Expect sunny skies today with light and variable winds and afternoon high temperatures in the Wenatchee Valley into the mid 90’s.
By tonight, a cold front nears the Washington coast and will aid in a slightly enhanced marine push through the Cascade gaps. The Fire Weather Watch for the Kittitas Valley will be upgraded to a Red Flag Warning from 4:00 p.m. to 8:00 p.m. this evening. Locally breezy winds will also be found around Vantage, Wenatchee, and the Waterville Plateau but should fall short of critical wind thresholds. Wind tonight in the Wenatchee area will be 10-20 mph.
The cold front then reaches the Cascades early Saturday morning and then over Eastern Washington late morning and early afternoon. A combination of tightening surface pressure gradients will lead to widespread breezy to locally windy conditions for Northcentral Washington on Saturday. Under partly cloudy skies and winds 15-25 mph by afternoon, highs on Saturday will cool down into the mid 80’s.
Sunday through Monday, a nearly zonal flow aloft sets up on Sunday behind Saturday’s cold front with light winds and afternoon highs rising back into the upper 80’s.
The strong high-pressure ridge in the four-corners area of the Southwest U.S. will strengthen a bit on Monday, resulting in a modest warming trend with highs in the lower 90’s.
For the rest of next week Tuesday through Friday weather models indicate a longwave trough will set up over the eastern Pacific. This should keep the aforementioned ridge from building strongly into the region with temperatures projected to remain right about normal for this time of year. With sunny skies each day, afternoon high temperatures for most of next week will be in the upper 80’s with overnight low temperatures in the lower 60’s.