10-Day Weather Forecast - Saint Charles, MO

Sunny cooler with highs in the lower 20s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 5 below.

Mostly clear. Lows around 13. Southwest winds around 5 mph.

Mostly sunny. Not as cool with highs in the upper 30s. South winds 5 to 10 mph. Wind chill values as low as 5 above in the morning.

Partly cloudy in the evening then becoming mostly cloudy. Not as cool. Near steady temperature in the lower 30s. Temperature rising into the mid 30s after midnight. South winds 10 to 15 mph with gusts up to 25 mph.

Sunny. Highs in the mid 40s. West winds 10 to 15 mph with gusts up to 25 mph.

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

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

Mostly cloudy. Lows around 20. Highs in the upper 20s.

Mostly cloudy. Lows around 20. Highs in the upper 20s.

Mostly cloudy with a 20 percent chance of snow. Lows around zero. Highs around 15. Wind chill values as low as 15 below.

Mostly cloudy with a 20 percent chance of snow. Lows around zero. Highs around 15. Wind chill values as low as 15 below.

Mostly cloudy. A chance of snow mainly in the evening. Lows 5 to 10 above. Chance of snow 30 percent. Wind chill values as low as 5 below.

Mostly sunny. Not as cool with highs in the mid 20s.

Clear. Low temperature around 6F. Dew point will be around 0F with an average humidity of 66%. Winds will be 1 mph from the N.

Sunny. High temperature around 20F. Dew point will be around 5F with an average humidity of 62%. Winds will be 1 mph from the NE.

Clear. Low temperature around 10F. Dew point will be around 5F with an average humidity of 70%. Winds will be 1 mph from the E.

Mostly cloudy. High temperature around 24F. Dew point will be around 10F with an average humidity of 66%. Winds will be 1 mph from the E.

Mostly cloudy. Low temperature around 14F. Dew point will be around 10F with an average humidity of 72%. Winds will be 2 mph from the W.