10-Day Weather Forecast - Lake Saint Louis, MO

Mostly sunny. Not as cool with highs in the mid 50s. South winds 10 to 15 mph becoming west in the afternoon.

Partly cloudy. Lows in the upper 20s. Northwest winds 5 to 10 mph.

Mostly sunny. Cooler with highs in the lower 40s. North winds around 5 mph becoming northeast in the afternoon.

Mostly cloudy. Lows in the upper 20s. Highs in the upper 40s.

Mostly cloudy. Lows in the upper 20s. Highs in the upper 40s.

Mostly cloudy. Lows in the lower 40s. Highs in the lower 60s.

Mostly cloudy. Lows in the lower 40s. Highs in the lower 60s.

Mostly cloudy. Lows in the upper 40s. Highs in the upper 60s.

Mostly cloudy. Lows in the upper 40s. Highs in the upper 60s.

Mostly cloudy in the evening then becoming partly cloudy. Lows in the upper 50s.

Mostly sunny. Highs in the lower 70s.

Mostly clear. Low temperature around 49F. Dew point will be around 56F with an average humidity of 82%. Winds will be 5 mph from the SW.

Mostly sunny. High temperature around 63F. Dew point will be around 48F with an average humidity of 73%. Winds will be 2 mph from the SE.

Partly cloudy. Low temperature around 49F. Dew point will be around 48F with an average humidity of 82%. Winds will be 2 mph from the S.

Partly cloudy. High temperature around 58F. Dew point will be around 47F with an average humidity of 75%. Winds will be 2 mph from the N.

Partly cloudy. Low temperature around 44F. Dew point will be around 42F with an average humidity of 76%. Winds will be 4 mph from the N.

Partly cloudy. High temperature around 49F. Dew point will be around 38F with an average humidity of 69%. Winds will be 6 mph from the N.

Mostly clear. Low temperature around 34F. Dew point will be around 32F with an average humidity of 73%. Winds will be 6 mph from the N.