One weather disturbance moved east late yesterday before the next storm system arrives tonight. Temperatures today will be about 5 degrees above average with afternoon highs in the upper 30s to mid- 40s across the Inland Northwest. Low clouds and fog could linger into the late morning or early afternoon across the west plains toward the Waterville Plateau and Wenatchee Valley. Tonight, a deep area of low pressure will make landfall on the central British Columbia coast producing widespread precipitation across Northcentral Washington tonight. We have a 100% chance of rain in the Wenatchee area tonight with up to a quarter of an inch possible. Snow levels will likely be low enough for 1 to 4 inches of snow accumulation in the Methow Valley overnight with similar amounts above 2000 feet around Leavenworth. Motorists with plans to travel over Stevens, Blewett, Loup Loup, or Sherman Pass tonight should be prepared for winter driving conditions.
As the weather system moves away Saturday, we will see partial clearing and warm temperatures with afternoon highs in the lower 40’s.
Sunday and Sunday night, a weak trough of low pressure will move in off the eastern Pacific bringing us a 30% chance of rain with highs in the upper 30’s. For Martin Luther King Day on Monday, we will see a break from the wet weather with mostly sunny skies and highs in the upper 30’s to near 40 degrees.
By Tuesday, another weather disturbance moves our way from the northwest bring a 40% chance of rain on Tuesday and a 50% chance Tuesday night. Leftover showers are possible Wednesday morning with clearing skies in the afternoon and warmer with afternoon highs in the lower 40’s.
High pressure moves in late next week with sunny skies, light winds and high temperatures around 40 degrees both Thursday and Friday.