Idaho – Sunshine and cool morning air feel calm now, but a wetter and more active spring pattern is already lining up to change conditions across the Treasure Valley within the next 48 hours.
According to the National Weather Service, Boise reaches near 70°F today under mostly sunny skies, with light winds shifting northwest by afternoon. Conditions remain stable through the day, keeping roads like I-84 dry and visibility clear across Ada and Canyon counties.
That calm holds into Thursday with highs climbing to around 76°F and continued sunshine. By late Thursday, clouds begin to increase, signaling a transition. Moisture starts pushing into southwest Idaho, setting up the first round of unsettled weather by Friday.
Showers develop Friday with a 30% chance during the day, increasing into the evening. Roads may turn slick after the first rainfall, especially during the evening commute. Stay alert for reduced traction on bridges and ramps.
By Saturday, the pattern shifts fully. Rain chances jump to as high as 80% by afternoon, with periods of steady showers and possible thunderstorms. Expect wet pavement, slower travel on I-84, and reduced visibility during heavier bursts. Plan extra time if heading out.
Sunday stays unsettled with a 60% chance of showers and cooler highs near 59°F. The air will feel damp and noticeably cooler compared to earlier warmth.
Early next week keeps scattered showers around before gradual clearing returns. Warmer spring air may build again late next week. Are you ready for the shift from sunshine to steady rain this weekend?
Five Day Outlook for Boise, Idaho:
Today: Mostly sunny, high near 70°F
Tonight: Partly cloudy, low near 45°F
Thursday: Sunny, high near 76°F
Friday: 30% chance of showers, high near 75°F
Saturday: Showers likely, high near 68°F (up to 80%)
