10-Day Weather Forecast - Saint Charles, MO

Sunny. Highs in the mid 90s. Southeast winds around 5 mph.

Mostly clear. Lows in the upper 60s. Southeast winds 5 to 10 mph.

Sunny hot with highs in the mid 90s. South winds around 5 mph.

Partly cloudy. Lows in the upper 60s.

Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20 percent.

Mostly cloudy. Lows in the upper 60s.

Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20 percent.

Partly cloudy in the evening then becoming mostly clear. Lows in the upper 60s.

Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 20 percent.

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 60s.

Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent.

Partly cloudy with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 70F. Dew point will be around 64F with an average humidity of 69%. Winds will be 2 mph from the S.

Mostly sunny. High temperature around 92F. Dew point will be around 64F with an average humidity of 54%. Winds will be 3 mph from the SW.

Partly cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 66F. Dew point will be around 65F with an average humidity of 75%. Winds will be 2 mph from the W.

Mostly sunny. High temperature around 89F. Dew point will be around 64F with an average humidity of 61%. Winds will be 2 mph from the W.

Clear. Low temperature around 64F. Dew point will be around 62F with an average humidity of 74%. Winds will be 1 mph from the W.

Sunny. High temperature around 87F. Dew point will be around 62F with an average humidity of 59%. Winds will be 2 mph from the SW.

Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 63F. Dew point will be around 62F with an average humidity of 74%. Winds will be 1 mph from the W.