10-Day Weather Forecast - Saint Charles, MO

Sunny. Not as cool with highs in the upper 30s. South winds 5 to 10 mph.

Mostly cloudy. Not as cool with lows in the mid 20s. Southwest winds around 5 mph.

Partly sunny. Highs in the upper 30s. Northwest winds around 5 mph becoming north around 5 mph in the afternoon.

Mostly cloudy. A slight chance of snow after midnight. Lows in the upper 20s. East winds around 5 mph. Chance of snow 20 percent.

Mostly cloudy. A chance of rain and snow mainly in the morning. Highs in the mid 30s. Chance of precipitation 30 percent.

Mostly cloudy. Cooler with lows around 15.

Partly cloudy. Highs in the lower 30s. Lows in the lower 20s.

Partly cloudy. Highs in the lower 30s. Lows in the lower 20s.

Mostly sunny. Not as cool with highs in the mid 40s.

Mostly cloudy. Near steady temperature in the mid 30s. Temperature rising into the upper 30s after midnight.

Mostly cloudy with a 40 percent chance of rain. Highs in the mid 40s.

Mostly cloudy. Lows in the lower 20s. Highs in the mid 30s.

Mostly cloudy. Lows in the lower 20s. Highs in the mid 30s.

Clear. Low temperature around 26F. Dew point will be around 20F with an average humidity of 70%. Winds will be 3 mph from the NW.

Sunny. High temperature around 35F. Dew point will be around 19F with an average humidity of 57%. Winds will be 3 mph from the W.

Clear. Low temperature around 26F. Dew point will be around 20F with an average humidity of 71%. Winds will be 2 mph from the NW.

Sunny. High temperature around 36F. Dew point will be around 21F with an average humidity of 62%. Winds will be 2 mph from the S.

Clear. Low temperature around 33F. Dew point will be around 26F with an average humidity of 73%. Winds will be 3 mph from the S.