Boise, ID – Thick fog clings to the Treasure Valley this morning, dimming headlights and icing windshields as holiday travelers head home. The National Weather Service has issued a Dense Fog Advisory for much of southwest Idaho, warning drivers to expect visibility below a quarter mile until mid-morning.
Temperatures sit near freezing, creating potential slick spots on bridges and overpasses. Residents are urged to slow down and allow extra time for morning commutes or post-Thanksgiving trips along I-84. The fog should lift by late morning, revealing a partly sunny sky with highs near 52°F.
By Friday, a weak system moves through the region, bringing light rain chances and patchy fog before daybreak. Weekend conditions will stay seasonably cool, with highs in the mid-40s and nighttime lows dipping to the upper 20s. Saturday night could see a brief round of light rain before clearing returns Sunday.
Meteorologists note this calm spell won’t last long. A broader cold pattern is taking shape across the western and central U.S. heading into early December, with NOAA projecting below-normal temperatures from Idaho to the Midwest. Expect a noticeable chill by midweek next week—perfect timing for early Christmas decorating or winter gear prep.
Five-Day Outlook for Boise, ID
- Friday: Partly sunny, light rain possible, high 48°F.
- Saturday: Mostly cloudy, high 46°F, low 29°F.
- Sunday: Mostly sunny, high 43°F.
- Monday: Partly cloudy, high 40°F.
- Tuesday: Mostly cloudy, slight rain chance, high 42°F.
