Sibley Unit - Otter Creek Wildlife Management Area UV IndexUnited StatesIAOsceola CountySibley Unit - Otter Creek Wildlife Management Area1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAASibley Unit - Otter Creek Wildlife Management Area UV forecast issued today at 2:17 pm. Next forecast at approx. 2:17 pm.Get WillyWeather+ to remove ads