10-Day Weather Forecast - Alton, MO

Sunny, hot with highs in the upper 90s. Light and variable winds, becoming southeast around 5 mph in the afternoon.

Clear. Lows around 70. Southeast winds around 5 mph.

Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs around 100. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 108.

Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Humid with lows in the lower 70s. Southwest winds around 5 mph. Chance of rain 50 percent.

Showers with a slight chance of thunderstorms in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Not as hot with highs in the upper 80s. Chance of rain 90 percent.

A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the mid 60s. Chance of rain 50 percent.

Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs around 90. Chance of rain 20 percent.

Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s.

Mostly sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Hot with highs in the lower 90s. Chance of rain 40 percent.

A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the upper 60s. Chance of rain 20 percent.

Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the lower 90s. Chance of rain 20 percent.

Partly cloudy. A slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent.

Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs around 90. Chance of rain 20 percent.

Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 64F. Dew point will be around 64F with an average humidity of 77%. Winds will be 3 mph from the N.

Sunny with a 35% chance for rain and thunderstorms. High temperature around 83F. Dew point will be around 61F with an average humidity of 63%. Winds will be 4 mph from the N.

Clear with a 35% chance for rain and thunderstorms. Low temperature around 60F. Dew point will be around 59F with an average humidity of 74%. Winds will be 5 mph from the NE.

Sunny. High temperature around 80F. Dew point will be around 58F with an average humidity of 63%. Winds will be 5 mph from the NE.

Clear. Low temperature around 57F. Dew point will be around 56F with an average humidity of 74%. Winds will be 6 mph from the NE.