| NWS Forecast for: Boise Mountains Issued by: National Weather Service Boise, ID Last Update: 230 AM MDT Sat Sep 5 2026 |  |
| Today: Areas of fog this morning. Mostly sunny. Warmer with highs 63 to 78. Tonight: Partly cloudy in the evening, then mostly cloudy with a chance of rain showers after midnight. Areas of fog after midnight. Chance of rain 30 percent. Lows 34 to 49. Sunday: Partly cloudy. A chance of rain showers in the morning. Areas of fog in the morning. Chance of rain 30 percent. Highs 65 to 79. Sunday Night: A slight chance of thunderstorms. Rain showers, mainly after midnight. Areas of fog after midnight. Chance of rain 90 percent. Lows 32 to 47. Labor Day: Areas of fog in the morning. Rain showers in the morning, then rain showers likely with a slight chance of thunderstorms in the afternoon. Chance of rain 90 percent. Cooler with highs 51 to 66. Monday Night And Tuesday: Mostly clear. Patchy fog in the evening. Areas of fog through the day. Warmer. Lows 27 to 42. Highs 63 to 77. Tuesday Night: Increasing clouds. Lows 32 to 47. Wednesday Through Thursday: Partly cloudy. Highs 70 to 85. Lows 37 to 52. Thursday Night: Partly cloudy. Patchy fog after midnight. Lows 39 to 54. Friday: Mostly sunny. Areas of fog in the morning. A chance of rain showers, mainly in the afternoon. Chance of rain 30 percent. Highs 68 to 82. | |
| Zone Forecast: Boise Mountains | |
Visit your local NWS office at: https://www.weather.gov/boi |