10-Day Weather Forecast - Ballwin, MO

Sunny. Highs in the lower 90s. East winds around 5 mph.

Mostly clear. Humid with lows in the lower 70s. Southeast winds around 5 mph in the evening becoming light and variable.

Mostly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. Light and variable winds becoming south around 5 mph in the afternoon. Chance of rain 50 percent. Heat index values up to 102.

Partly cloudy. Lows in the mid 70s.

Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 50 percent. Heat index values up to 100.

Partly cloudy with a slight chance of showers and thunderstorms in the evening then mostly clear after midnight. Lows in the mid 70s. Chance of rain 20 percent.

Mostly clear. Highs in the lower 90s. Lows in the mid 70s. Heat index values up to 105.

Mostly clear. Highs in the lower 90s. Lows in the mid 70s. Heat index values up to 105.

Mostly clear. Highs in the lower 90s. Lows in the mid 70s. Heat index values up to 105.

Mostly clear. Highs in the lower 90s. Lows in the mid 70s. Heat index values up to 105.

Mostly sunny. Highs in the mid 90s. Heat index values up to 105.

Mostly clear with a 30% chance for rain and thunderstorms. Low temperature around 72F. Dew point will be around 70F with an average humidity of 74%. Winds will be 3 mph from the SW.

Sunny. High temperature around 91F. Dew point will be around 70F with an average humidity of 63%. Winds will be 3 mph from the W.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 69F. Dew point will be around 69F with an average humidity of 81%. Winds will be 1 mph from the SE.

Mostly sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 85F. Dew point will be around 69F with an average humidity of 68%. Winds will be 1 mph from the E.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 66F. Dew point will be around 66F with an average humidity of 82%. Winds will be 1 mph from the SE.

Mostly sunny. High temperature around 83F. Dew point will be around 67F with an average humidity of 69%. Winds will be 1 mph from the S.

Mostly clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 65F. Dew point will be around 66F with an average humidity of 83%. Winds will be 1 mph from the SE.