Sunday
Hot
High:
97°F
Sunny and hot, with a high near 97.
Saint Charles, MO Weather - Extended Forecast
Sunday Night
Mostly clear
Overnight low:
78°F
Mostly clear, with a low around 78.
Monday
Hot
High:
97°F
Sunny and hot, with a high near 97.
Monday Night
Partly cloudy
Overnight low:
77°F
Partly cloudy, with a low around 77.
Tuesday
Chance of showers and thunderstorms
High:
96°F
Tuesday Night
Partly cloudy
Overnight low:
76°F
Wednesday
Chance of showers and thunderstorms
High:
95°F
Wednesday Night
Slight chance of thunderstorms
Overnight low:
76°F
Thursday
Sunny
High:
94°F