| NWS Forecast for: Grand and Summit Counties Below 9000 Feet Issued by: National Weather Service Denver-Boulder, CO Last Update: 605 PM MDT Sat Aug 22 2026 | |
| Tonight: Mostly cloudy. Chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows 46 to 52. Chance of rain 50 percent. Sunday: Partly cloudy in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 76 to 82. West winds 10 to 15 mph in the afternoon. Chance of precipitation 40 percent. Sunday Night: Mostly cloudy with a slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows 43 to 51. Chance of precipitation 20 percent. Monday: Mostly cloudy with a 30 percent chance of thunderstorms. Highs 76 to 82. Monday Night: Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows 39 to 49. Chance of rain 30 percent. Tuesday: Partly cloudy with a 30 percent chance of thunderstorms. Highs 74 to 80. Tuesday Night Through Thursday Night: Partly cloudy with a 20 percent chance of thunderstorms. Lows 39 to 49. Highs 75 to 82. Friday Through Saturday: Partly cloudy. Highs 76 to 82. Lows 40 to 50. | |
| Zone Forecast: Grand and Summit Counties Below 9000 Feet | |
Visit your local NWS office at: https://www.weather.gov/bou |