Idaho – Sunshine breaks through briefly, but clouds are already lining up, signaling a sharp shift toward a wetter and more unsettled pattern.
The day starts calm and mild, with temperatures climbing toward 74°F under partly sunny skies. It feels like a true spring warm-up, but that window closes quickly.
According to the National Weather Service, storm chances begin building by Friday afternoon, with a 40% chance of showers and thunderstorms developing across southwest Idaho. Some storms may produce brief downpours and gusty winds.
By Friday night, rain becomes more widespread. Showers are likely, with a 70% chance of steady rainfall moving into Boise and surrounding areas. Roads may turn slick, especially after sunset.
Saturday brings the most impactful stretch. Rain chances climb to 90%, with periods of steady showers and possible thunderstorms through the afternoon. Expect wet pavement, reduced visibility, and slower travel along I-84 and surface streets.
Keep umbrellas and rain gear ready. Outdoor plans may need adjusting, especially later in the day.
Saturday night into Sunday continues the wet trend. Showers remain likely, with another 70–90% chance of rain. Temperatures drop into the 50s, adding a cooler, damp feel across the Treasure Valley.
By Sunday, highs struggle near 56°F with continued showers. Conditions remain unsettled, though rainfall becomes more intermittent later in the day.
Early next week shows gradual improvement, but scattered showers may linger into Monday before drier conditions return.
Five Day Outlook for Boise, ID:
Friday: High 72°F, storms possible (40%)
Saturday: High 67°F, rain likely (90%)
Sunday: High 56°F, showers (90%)
Monday: High 56°F, chance of showers (40%)
Tuesday: High 61°F, partly sunny
