| NWS Forecast for: Boise Mountains Issued by: National Weather Service Boise, ID Last Update: 207 PM MST Tue Dec 23 2025 |  |
| Tonight: Mostly cloudy. A chance of rain and snow, mainly after midnight. Chance of precipitation 30 percent. Lows 27 to 42. Wednesday: Rain and snow. Areas of fog in the afternoon. Chance of precipitation near 100 percent. No snow accumulation across the lower elevations, with snow accumulation up to 4 inches over the mountains. Highs 38 to 52. Breezy. Wednesday Night: Rain and snow. Areas of fog. Chance of precipitation near 100 percent. No snow accumulation across the lower elevations, with snow accumulation up to 4 inches over the mountains. Lows 26 to 40. Christmas Day: Areas of fog in the morning. Rain and snow. Chance of precipitation 90 percent. Light snow accumulations possible. Highs 38 to 52. Thursday Night: Rain. Snow with a slight chance of thunderstorms in the evening, then snow after midnight. Patchy fog in the evening. Areas of fog after midnight. Chance of precipitation near 100 percent. Moderate snow accumulations possible. Lows 22 to 37. Friday: Rain in the morning. Areas of fog in the morning. Snow. Chance of precipitation near 100 percent. Moderate snow accumulations possible. Highs 31 to 44. Friday Night: Snow likely. Patchy fog in the evening. Areas of fog after midnight. Chance of snow 70 percent. Light snow accumulations possible. Colder with lows 14 to 29. Wind chills as low as zero. Saturday: Partly cloudy. A chance of snow in the morning. Areas of fog in the morning. Chance of snow 30 percent. Highs 25 to 39. Wind chills as low as zero. Saturday Night And Sunday: Partly cloudy. Areas of fog. Lows 6 to 21. Highs 28 to 39. Wind chills as low as 5 below. Sunday Night: Mostly clear. Patchy fog in the evening. Areas of fog after midnight. Lows 9 to 24. Monday: Areas of fog in the morning. Mostly sunny. Highs 29 to 42. Monday Night: Partly cloudy. Patchy fog. Lows 13 to 27. Tuesday: Sunny. Patchy fog. Highs 32 to 45. | |
| Zone Forecast: Boise Mountains | |
Visit your local NWS office at: https://www.weather.gov/boi |