Our weather for Wednesday continues to be driven by an expansive ridge of high pressure in the Pacific with an offshore northerly flow over the Inland Northwest. Sunny skies, light winds and slightly warmer temperatures in store for Northcentral Washington today with afternoon high temperatures into the lower 80’s. We will see one last day of a northerly push of air down the Okanogan Valley with winds peaking in the late morning or early afternoon before decreasing. 10 to 20 mph with gusts to 30 mph will again be possible. The strongest winds have been in the Okanogan Valley and will decrease as we move into the Waterville Plateau and Columbia Basin, so no impacts are expected.
On Thursday, the ridge axis moves closer to the coastline as a weather system develops off the California coast. Clear to mostly clear skies expected tomorrow with well-above average highs into the lower to mid-80’s.
For Friday, Saturday, Sunday and Monday, the upper ridge, which has been a dominate feature over the Eastern Pacific, builds inland across the Northwest delivering a strong warming and drying trend across the region. Under sunny skies each day, afternoon high temperatures will top out in the mid to upper 80’s. The weekend highs are nearly 10 to 15 degrees above normal for this time of year. A few spots in the lower Columbia Basin will possibly flirt with the lower 90s Saturday and Sunday as well.
By late Monday, the weather ridge will begin to flatten and shift south into the central Great Basin, opening the region up to an increased southwest upper level flow. The subsequent increase in high-level clouds will also dampen daytime highs as well. Temperature will remain mild and range from the high 70s to low 80s through Tuesday.