| NWS Forecast for: Boise Mountains Issued by: National Weather Service Boise, ID Last Update: 230 AM MDT Wed Sep 16 2026 | |
| Today: Sunny. Highs 72 to 86. Tonight: Mostly clear in the evening, then partly cloudy with a slight chance of rain showers after midnight. Chance of rain 20 percent. Lows 39 to 54. Thursday: Areas of fog in the morning. Partly cloudy with a chance of rain showers in the morning, then rain showers with a chance of thunderstorms in the afternoon. Thunderstorms may produce gusty winds and small hail in the afternoon. Chance of rain 80 percent. Highs 68 to 82. Thursday Night: Partly cloudy. A chance of rain showers and thunderstorms in the evening, then a slight chance of rain showers after midnight. Patchy fog after midnight. Thunderstorms may produce gusty winds and small hail in the evening. Chance of rain 30 percent. Lows 36 to 51. Friday: Areas of fog in the morning. A chance of rain showers in the morning, then rain showers likely with a slight chance of thunderstorms in the afternoon. Chance of rain 60 percent. Highs 61 to 75. Friday Night: Partly cloudy. A chance of rain showers with a slight chance of thunderstorms in the evening. Areas of fog after midnight. Chance of rain 30 percent. Lows 33 to 48. Saturday Through Sunday: Areas of fog in the morning. Areas of fog through the day. Mostly clear. Highs 66 to 80. Lows 34 to 49. Sunday Night And Monday: Mostly clear. Lows 36 to 51. Highs 68 to 82. Monday Night: Decreasing clouds. Lows 35 to 50. Tuesday: Sunny. Highs 66 to 81. | |
| Zone Forecast: Boise Mountains | |
Visit your local NWS office at: https://www.weather.gov/boi |