| NWS Forecast for: Grand and Summit Counties Below 9000 Feet Issued by: National Weather Service Denver-Boulder, CO Last Update: 605 AM MDT Sat Sep 12 2026 | |
| Today: Partly cloudy early in the morning, then a slight chance of showers late in the morning. Mostly cloudy with a slight chance of thunderstorms in the afternoon. Highs 72 to 78. West winds 10 to 20 mph in the afternoon. Gusts up to 30 mph. Chance of rain 20 percent. Tonight: Partly cloudy. Slight chance of showers in the evening. Lows 39 to 47. Chance of rain 20 percent. Sunday: Mostly sunny in the morning, then mostly cloudy with a chance of thunderstorms in the afternoon. Highs 75 to 81. Southwest winds 10 to 20 mph in the afternoon. Gusts up to 30 mph. Chance of precipitation 40 percent. Sunday Night: Mostly cloudy with a chance of showers and slight chance of thunderstorms. Lows 42 to 50. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. Monday: Mostly cloudy with a 50 percent chance of thunderstorms. Highs 67 to 73. Southwest winds 10 to 15 mph with gusts up to 35 mph. Monday Night: Mostly cloudy with a 50 percent chance of rain showers. Lows 36 to 46. Tuesday: Mostly cloudy with a 50 percent chance of thunderstorms. Highs 67 to 73. Tuesday Night: Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 35 to 45. Chance of rain 50 percent. Wednesday: Mostly cloudy with a 40 percent chance of thunderstorms. Highs 67 to 73. Wednesday Night: Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 34 to 44. Chance of rain 30 percent. Thursday: Partly cloudy with a 30 percent chance of thunderstorms. Highs 68 to 74. Thursday Night: Partly cloudy with a 20 percent chance of rain showers. Lows 33 to 43. Friday: Partly cloudy with a 20 percent chance of thunderstorms. Highs 69 to 75. | |
| Zone Forecast: Grand and Summit Counties Below 9000 Feet | |
Visit your local NWS office at: https://www.weather.gov/bou |