Vandalia's outlook: warmest day near 102° (Friday), coldest night about 60° (Friday). Roughly 0.07 in of rain falls over the period, with Sunday the most likely wet day (57%). Wind is the one to watch: gusts to 37 mph around Tuesday. The NWS alert board for this area is currently clear. Right now Vandalia is running about 7° warmer than Peoria. Longer view: variable mid-latitude weather in every season.
Vandalia, IL · Elev 518 ft · 38.96°N, 89.09°W · Illinois · Forecast computed for these exact coordinates