Spokane, WA September Fall Weather: Thunderstorm Chances Rise Wednesday With Travel Impact Across I-90

SPOKANE, Wash. – Drivers across eastern Washington may face reduced visibility and wet pavement Wednesday as haze lingers and thunderstorms threaten Spokane. Afternoon commuters, especially along Interstate 90, should prepare for slower travel and sudden downpours during peak drive times.

According to the National Weather Service, widespread haze will hang over the city through late morning Wednesday before clouds build and storms develop. Showers and thunderstorms are most likely after 5 p.m., with some storms capable of producing brief heavy rain and lightning.

Temperatures will climb to near 86 degrees by afternoon, but conditions will shift quickly as clouds roll in. Overnight lows dip to around 59, offering some relief. Light winds mean smoke and haze may remain trapped in the valley, reducing air quality and visibility…

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