Idaho – A gray, muted morning settles over the Treasure Valley as Boise starts the day under low clouds and cold air. Headlights glow through haze, frost clings to windshields, and the air feels damp rather than sharp. Conditions remain calm now, but subtle changes could affect travel later today.
According to the National Weather Service in Boise, increasing clouds will dominate today with highs near the low 40s. A slight chance of snow develops late tonight into early Wednesday, with light accumulation possible. Any snowfall stays minor, but even a dusting can cause slick spots with temperatures hovering near freezing.
Across Ada and Canyon counties, roads remain mostly dry early. Drivers should watch bridges and shaded areas late tonight and early Wednesday. Even brief snow showers could lead to flash freezing where pavement cools quickly after sunset. Slow down during early commutes, especially in fog-prone areas.
Wednesday brings another chance for light snow before late morning, followed by gradual clearing. Highs reach the low 40s again. Patchy fog becomes the bigger concern Wednesday night into Thursday morning, reducing visibility on surface streets and stretches of I-84 near Boise and Meridian.
By Thursday and Friday, the pattern turns milder but murky. Clouds linger, fog redevelops during the mornings, and highs climb into the mid to upper 40s. Overnight lows stay near freezing, keeping icy patches possible during early hours despite daytime warming.
Looking ahead, NOAA’s 6–10 day outlook points to near-normal temperatures for Idaho with below-normal precipitation into early February. That suggests fewer storms but continued freeze-thaw cycles, a common winter hazard in the valley.
Plan extra time for morning travel, use low beams in fog, and watch pavement closely after dark. Are you seeing fog or flakes where you are this morning?
Five-Day Outlook for Boise, Idaho
- Today: Increasing clouds. High near 42.
- Wednesday: Chance of light snow early, then clearing. High near 43.
- Thursday: Patchy morning fog, then mostly cloudy. High near 43.
- Friday: Fog early, mostly cloudy. High near 47.
- Saturday: Mostly cloudy. High near 48.
