Thaddeus Stubblefield Grove Nature Preserve UV IndexUnited StatesILMcLean CountyThaddeus Stubblefield Grove Nature Preserve1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAThaddeus Stubblefield Grove Nature Preserve UV forecast issued today at 12:05 am. Next forecast at approx. 12:05 am.Get WillyWeather+ to remove ads