The 10-day span for Oregon runs from a high near 82° on Sunday down to 57° overnight on Saturday. Roughly 1.8 in of rain falls over the period, with Friday the most likely wet day (89%). No watches or warnings are active for the area right now. Right now Oregon is about 5° cooler than nearby Peoria. Longer view: variable mid-latitude weather in every season.
Oregon, IL · Elev 709 ft · 42.01°N, 89.33°W · Illinois · Forecast computed for these exact coordinates