| NWS Forecast for: Grand and Summit Counties Below 9000 Feet Issued by: National Weather Service Denver-Boulder, CO Last Update: 1248 AM MDT Wed Aug 19 2026 |  |
| Rest Of Tonight: Mostly cloudy. Chance of showers after midnight, then a slight chance of showers towards sunrise. Lows 40 to 50. Chance of rain 30 percent. Wednesday: Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs 75 to 81. Northwest winds 10 to 15 mph in the afternoon. Chance of precipitation 20 percent. Wednesday Night: Mostly clear. Lows 40 to 50. Thursday: Mostly sunny. Highs 79 to 85. Thursday Night: Partly cloudy. Lows 43 to 51. Friday And Friday Night: Partly cloudy. Highs 81 to 87. Lows 45 to 53. Saturday: Mostly cloudy with a 50 percent chance of thunderstorms. Highs 78 to 84. Saturday Night: Showers likely and chance of thunderstorms. Lows 43 to 51. Chance of rain 60 percent. Sunday And Sunday Night: Mostly cloudy with a 40 percent chance of thunderstorms. Highs 74 to 80. Lows 40 to 50. Monday: Showers likely and chance of thunderstorms. Highs 74 to 80. Chance of rain 60 percent. Monday Night: Mostly cloudy with a 40 percent chance of thunderstorms. Lows 39 to 49. Tuesday: Mostly cloudy with a 50 percent chance of thunderstorms. Highs 73 to 79. | |
| Zone Forecast: Grand and Summit Counties Below 9000 Feet | |
Visit your local NWS office at: https://www.weather.gov/bou |