The weather across Eastern Washington and North Idaho will be marked by showers and thunderstorms, primarily affecting the northern mountains this weekend. Tonight, isolated to scattered showers and a 20-30% chance of thunderstorms are anticipated, with probabilities increasing to 40% near the Canadian border. Breezy conditions will prevail, with winds reaching up to 20 mph across various regions including the Waterville Plateau and Columbia Basin. Overnight temperatures will dip into the 40s for northern valleys and the mid 40s to low 50s elsewhere.
Looking ahead, light shower activity is expected to continue into Sunday and Monday as a low-pressure system moves down the coast and begins to move inland. This system could lead to periods of rain from Tuesday through Wednesday, especially in north Idaho and the eastern third of Washington. Winds will be notably breezy on Tuesday, with gusts potentially reaching 25 mph.
The forecast also indicates a temperature drop, with highs expected to range from the mid 60s to low 70s by Wednesday. Sunday will see warmer temperatures in the mid 70s to around 80 before cooling off. The chance of precipitation varies from 20-50%, with higher chances in the central and southern Idaho Panhandle.