Saturday
Hot
High:
98°F
Sunny and hot, with a high near 98. Heat index values as high as 109. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Saint Charles, MO Weather - Tomorrow’s Forecast
Saturday Night
Mostly clear
Overnight low:
78°F
Mostly clear, with a low around 78. South wind 7 to 10 mph.