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 yesterday at 2:18 pm. Next forecast at approx. 2:18 pm.Get WillyWeather+ to remove ads