BOISE, ID — Fog drapes low across the Treasure Valley this morning, turning headlights into soft halos and quieting the roads. It’s the kind of late-fall calm that feels temporary — because it is. While Idaho enjoys a stretch of mild sun, the next weather system looms just in time for Thanksgiving travel week.
The National Weather Service in Boise reports dense fog lingering early today, especially along I-84 and rural valley roads, before sunshine breaks through late morning. Visibility may drop below a quarter mile at times, so early drivers should allow extra time and use low beams.
Sunday brings another dry, comfortable day with highs in the low 50s, perfect for outdoor prep or early holiday shopping. But by Monday night, clouds will increase as a weak Pacific front edges toward the region, introducing a slight chance of showers. The rain chance strengthens by Tuesday night into Wednesday, with patchy light rain expected across Boise and into the foothills.
Thanksgiving Day itself looks partly sunny and mild, with highs near 50°F, though another Pacific system could track inland by Black Friday — potentially bringing cooler air and scattered rain or mountain snow as winter-like patterns begin expanding across the Northwest.
Five-Day Outlook (Boise, ID)
- Sunday: Mostly sunny, high 52°F
- Monday: Mostly sunny, high 45°F
- Tuesday: Mostly sunny early, slight rain late, high 43°F
- Wednesday: Chance of rain, high 46°F
- Thanksgiving Day: Partly sunny, high 50°F
