Illinois Road Conditions Latest Closings & Delays Current Conditions: Decatur, IL, USA 78 °F Partly cloudy Wind:WSW @ 7 mphHumidity:69 %Precipitation:0.0 inPressure:30 Summary High Low Wind Precipitation Sun Thundery outbreaks in nearby High:85 °F Low:66 °F Wind:SSW @ 7 mph Precipitation:0.0 in Mon Light rain shower High:83 °F Low:66 °F Wind:SSW @ 15 mph Precipitation:0.0 in Tue Sunny High:84 °F Low:66 °F Wind:S @ 22 mph Precipitation:0.0 in Wed Moderate or heavy rain in area with thunder High:77 °F Low:58 °F Wind:NW @ 14 mph Precipitation:0.0 in Thu Sunny High:74 °F Low:51 °F Wind:E @ 6 mph Precipitation:0.0 in Fri Patchy rain nearby High:77 °F Low:57 °F Wind:SSE @ 11 mph Precipitation:0.0 in Sat Partly Cloudy High:83 °F Low:66 °F Wind:SSW @ 14 mph Precipitation:0.0 in Click buttons below for more Severe Weather updates. Current Watches & Warnings News Channel 20 Storm Team Forecast Xfinity Status (Outage) Center Ameren Outage Map Severe Weather Preparedness News Channel 20 Interactive Radar Winter Weather Preparedness Sign Up for Severe Weather Text Alerts