Granby, ColoradoWhat's the Weather on Lake Granby? Granby, CO 45° Rain Shower / Wind 7:29 am6:05 pm MST Feels like: 36°FWind: 22mph WHumidity: 70%Pressure: 29.45"HgUV index: 2 1 pm2 pm3 pm4 pm5 pm 41°F43°F43°F41°F41°F WedThuFriSatSun 36°F / 18°F43°F / 19°F48°F / 21°F52°F / 25°F50°F / 25°F