| 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 19 2026 | |
| Today: Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs 61 to 67. Southwest winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of rain 50 percent. Tonight: Partly cloudy in the evening, then becoming mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 29 to 39. Chance of rain 40 percent. Sunday: Partly cloudy. Chance of rain showers in the morning, then a slight chance of thunderstorms in the afternoon. Highs 58 to 64. West winds 10 to 15 mph with gusts up to 30 mph in the afternoon. Chance of rain 30 percent. Sunday Night: Mostly clear. Lows 26 to 36. Monday: Mostly sunny. Highs 63 to 69. Monday Night: Mostly clear. Lows 28 to 38. Tuesday: Partly cloudy. Highs 65 to 71. Tuesday Night: Partly cloudy with a 20 percent chance of thunderstorms. Lows 31 to 41. Wednesday: Mostly cloudy with a 20 percent chance of thunderstorms. Highs 63 to 69. Wednesday Night Through Thursday Night: Partly cloudy. Lows 31 to 41. Highs 66 to 72. Friday: Partly cloudy with a 20 percent chance of thunderstorms. Highs 66 to 72. | |
| Zone Forecast: Grand and Summit Counties Below 9000 Feet | |
Visit your local NWS office at: https://www.weather.gov/bou |