Expect another warm weather day today with increasing clouds, southwest wind 5-15 mph and afternoon high temperatures still above normal, into the mid 70’s. Sustained winds around 20 mph gusting to 30 mph will be common across the West Plains, Upper Columbia Basin, and Moses Lake area. Potholes, Moses Lake, and Banks Lake will be rough for boaters and fishermen today.
A broad trough of low pressure along the Washington/Oregon coast will supply some Pacific moisture to our region Tuesday and Wednesday. Mostly cloudy for Tuesday with a 50% chance of showers and much cooler weather with afternoon high temperatures tomorrow in the lower to mid-60’s. Mostly cloudy and wet on Wednesday too with a 40% chance of showers with highs warming into the upper 60’s and lower 70’s.
Weather models remain in good agreement that the upper-level low that will bring the moisture our way will slowly move east on Thursday with a 30% chance of scattered showers in the morning with partly cloudy skies by afternoon, highs in the upper 60’s.
Weather forecast for Friday looks nice with mostly sunny skies to start the day with increasing clouds during the afternoon, highs in the lower to mid-70’s.
This weekend, a deep low-pressure system coming off the Aleutian Island chain in Alaska will reach the coastal waters of the Pacific Northwest Saturday and wobble toward the coastal mountains on Sunday. Saturday looks to be a dry day with increasing mid and high-level clouds with afternoon high temperatures in the mid to upper 70’s. Conditions look to deteriorate Sunday into early next week as the low begins to move inland bringing a 70% chance of periods of light to moderate rain to Northcentral Washington, highs Sunday in the upper 60’s to near 70 degrees.