10-Day Weather Forecast - Lake Saint Louis, MO

Mostly sunny. Highs in the lower 60s. Southwest winds 5 to 10 mph becoming west in the afternoon.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 40s. East winds around 5 mph.

Mostly cloudy. Highs in the upper 60s. Southeast winds 5 to 10 mph.

Mostly cloudy. Not as cool with lows in the mid 50s. Southwest winds 5 to 10 mph.

Mostly cloudy. Highs around 70. Lows around 60.

Mostly cloudy. Highs around 70. Lows around 60.

Sunny. Highs in the lower 70s.

Mostly clear in the evening then becoming mostly cloudy. Cooler with lows in the upper 40s.

Mostly cloudy. Highs around 70.

Mostly cloudy with a 20 percent chance of rain. Cooler with lows in the upper 30s.

Mostly sunny. Much cooler with highs in the mid 40s.

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 clear. Low temperature around 34F. Dew point will be around 25F with an average humidity of 63%. Winds will be 1 mph from the S.

Mostly cloudy. High temperature around 48F. Dew point will be around 34F with an average humidity of 66%. Winds will be 5 mph from the S.

Partly cloudy. Low temperature around 42F. Dew point will be around 38F with an average humidity of 81%. Winds will be 3 mph from the SW.

Cloudy. High temperature around 54F. Dew point will be around 42F with an average humidity of 74%. Winds will be 5 mph from the SW.

Mostly cloudy. Low temperature around 46F. Dew point will be around 42F with an average humidity of 83%. Winds will be 3 mph from the SW.