Boise, ID – A calm Saturday across Idaho will give way to a more active weather pattern Sunday, with thunderstorms, gusty winds, and small hail possible across much of the region.
According to the National Weather Service in Boise, rain chances will increase steadily from west to east beginning Sunday morning, September 14, 2025. By the afternoon and evening, the highest likelihood of thunderstorms will arrive, bringing stronger cells capable of producing gusty winds and small hail.
The NWS said the most widespread activity is expected in western and central Idaho, including the Boise and Treasure Valley areas, before shifting eastward toward Twin Falls and Idaho Falls later in the day. Northern sections near La Grande, Oregon, are also expected to see significant rainfall chances.
Forecasters warn that while not all storms will be severe, the strongest storms could create hazardous travel conditions and sudden weather shifts. Drivers and outdoor recreationists are urged to prepare for changing skies, slick roads, and reduced visibility.
The active weather is forecast to last into Sunday night, before tapering off by early Monday morning.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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