| NWS Forecast for: Grand and Summit Counties Below 9000 Feet Issued by: National Weather Service Denver-Boulder, CO Last Update: 605 PM MDT Mon Aug 17 2026 | |
| Tonight: Mostly clear. Lows 39 to 49. Tuesday: Partly cloudy in the morning, then mostly cloudy with a slight chance of thunderstorms in the afternoon. Highs 75 to 81. West winds 10 to 15 mph with gusts up to 25 mph in the afternoon. Chance of precipitation 10 percent. Tuesday Night: Slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows 39 to 49. Chance of rain 40 percent. Wednesday: Mostly cloudy with a 30 percent chance of thunderstorms. Highs 75 to 81. Wednesday Night: Partly cloudy with a 20 percent chance of showers. Lows 38 to 48. Thursday: Mostly sunny. Highs 76 to 82. Thursday Night: Partly cloudy. Lows 40 to 50. Friday: Partly cloudy with a 20 percent chance of thunderstorms. Highs 79 to 85. Friday Night: Partly cloudy. Lows 42 to 52. Saturday: Mostly cloudy with a 40 percent chance of thunderstorms. Highs 77 to 83. Saturday Night: Mostly cloudy with a 50 percent chance of thunderstorms. Lows 41 to 51. Sunday: Showers likely and chance of thunderstorms. Highs 74 to 80. Chance of rain 60 percent. Sunday Night And Monday: Mostly cloudy with a 50 percent chance of thunderstorms. Lows 39 to 49. Highs 72 to 78. | |
| Zone Forecast: Grand and Summit Counties Below 9000 Feet | |
Visit your local NWS office at: https://www.weather.gov/bou |