Tuesday
Sunny
High:
89°F
Sunny, with a high near 89.
Saint Charles, MO Weather - Extended Forecast
Tuesday Night
Mostly clear
Overnight low:
70°F
Mostly clear, with a low around 70.
Wednesday
Sunny
High:
93°F
Sunny, with a high near 93.
Wednesday Night
Mostly clear
Overnight low:
75°F
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75.
Thursday
Chance of thunderstorms
High:
94°F
Thursday Night
Thunderstorms likely
Overnight low:
74°F
Friday
Chance of thunderstorms
High:
89°F
Friday Night
Chance of thunderstorms
Overnight low:
71°F
Saturday
Mostly sunny
High:
90°F