North Mokelumne River - Dead Horse Island UV IndexUnited StatesCASacramento CountyNorth Mokelumne River - Dead Horse Island1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAANorth Mokelumne River - Dead Horse Island UV forecast issued yesterday at 11:17 am. Next forecast at approx. 11:17 am.Get WillyWeather+ to remove ads