Thermalito Forebay North Picnic Area UV IndexUnited StatesCAButte CountyThermalito Forebay North Picnic Area1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAThermalito Forebay North Picnic Area UV forecast issued yesterday at 11:17 am. Next forecast at approx. 11:17 am.Get WillyWeather+ to remove ads