| NWS Forecast for: Boise Mountains Issued by: National Weather Service Boise, ID Last Update: 230 AM MDT Tue Sep 22 2026 | |
| Today: Partly cloudy. A chance of rain showers with a slight chance of thunderstorms this afternoon. Chance of rain 30 percent. Highs 67 to 82. Tonight: Rain showers likely with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Chance of rain 60 percent. Lows 38 to 53. Wednesday: Sunny. Highs 69 to 83. Wednesday Night: Mostly clear. Lows 40 to 55. Thursday: Sunny. Highs 74 to 89. Breezy. Thursday Night And Friday: Partly cloudy. Lows 43 to 58. Highs 65 to 80. Breezy. Friday Night: Partly cloudy. A slight chance of rain showers in the evening. Areas of fog after midnight. Chance of rain 20 percent. Lows 34 to 48. Saturday: Areas of fog in the morning. Mostly sunny. Cooler with highs 54 to 69. Saturday Night And Sunday: Partly cloudy. Lows 32 to 47. Highs 56 to 71. Sunday Night: Partly cloudy. Patchy fog after midnight. Lows 31 to 46. Monday: Areas of fog in the morning. Mostly sunny. Highs 52 to 67. | |
| Zone Forecast: Boise Mountains | |
Visit your local NWS office at: https://www.weather.gov/boi |