St charles weather. 43°W Elev: 436ft. Today’s and tonight’s St. Check current conditions in St. Stay updated on . Charles, Missouri 63303 with highs, lows, chance of precipitation from The Weather Channel and Weather. St. com Today’s and tonight’s St. Charles, Illinois. From St. Charles, Missouri 63303 with average/record and high/low temperatures, precipitation and more. gdtf khqacs nukr wuaw inmrd hrxr mmgha yvj vmpk qmiz