Idaho — A cool, pale dawn settles over the Treasure Valley as faint stars fade behind thin, building clouds. Streets glisten under soft early light, hinting at the moisture waiting upstream as Boise moves toward a significantly wetter stretch.
Residents heading out early feel crisp, calm air, but that calm won’t last much longer. According to the National Weather Service, today stays sunny and mild, creating ideal conditions for errands, youth sports, or early Thanksgiving travel prep. Highway 55 and I-84 run clear this morning, though increasing clouds later signal a rapid shift toward rain by late evening.
To be fair, the first wave arrives tonight with a 40 percent chance of showers. Models then ramp moisture sharply Sunday, showing periods of steady rain, especially from midday into the evening. Rainfall coverage reaches 80 percent Sunday night. Visibility may drop at times along I-84 from Nampa to Mountain Home, and wet pavement could slow traffic heading toward the Boise Airport.
After all, another round follows Monday, maintaining a 60 percent chance of rain through midday. Winds stay light but persistent, and temperatures hover near the mid-50s. While no snow chance appears for the valley, higher elevations around Bogus Basin may flirt with a Winter Tease if colder pockets form late Sunday night. No accumulation is expected, but anyone driving mountain passes should watch for sudden temperature drops.
This wet stretch matters with Thanksgiving travel starting to pick up. Drivers should plan extra time Monday morning, especially if commuting east or heading toward Oregon where moisture remains deeper.
Five-Day Outlook for Boise, ID:
Sat: 62/44 – Sunny; increasing clouds late.
Sun: 61/45 – Rain develops; steady evening showers.
Mon: 55/39 – Rain likely early; tapering afternoon.
Tue: 53/35 – Chance morning rain; mostly sunny later.
Wed: 51/38 – Mostly sunny; calm and cool
