| NWS Forecast for: Grand and Summit Counties Below 9000 Feet Issued by: National Weather Service Denver-Boulder, CO Last Update: 605 PM MDT Thu Aug 20 2026 | |
| Tonight: Partly cloudy. Lows 42 to 52. Friday: Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs 82 to 88. Chance of precipitation 10 percent. Friday Night: Partly cloudy. Lows 44 to 52. Saturday: Showers likely and chance of thunderstorms. Highs 79 to 85. Chance of rain 60 percent. Saturday Night: Showers likely and chance of thunderstorms. Lows 43 to 51. Chance of rain 60 percent. Sunday: Mostly cloudy with a 30 percent chance of thunderstorms. Highs 75 to 81. Sunday Night: Partly cloudy with a 20 percent chance of thunderstorms. Lows 40 to 50. Monday: Mostly cloudy with a 30 percent chance of thunderstorms. Highs 74 to 80. Monday Night: Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows 38 to 48. Chance of rain 30 percent. Tuesday: Partly cloudy with a 40 percent chance of thunderstorms. Highs 74 to 80. Tuesday Night: Partly cloudy with a 20 percent chance of thunderstorms. Lows 38 to 48. Wednesday: Partly cloudy with a 30 percent chance of thunderstorms. Highs 74 to 80. Wednesday Night: Partly cloudy with a 20 percent chance of thunderstorms. Lows 38 to 48. Thursday: Partly cloudy with a 30 percent chance of thunderstorms. Highs 74 to 80. | |
| Zone Forecast: Grand and Summit Counties Below 9000 Feet | |
Visit your local NWS office at: https://www.weather.gov/bou |