Alton, MO Weather Forecast & Current Conditions

Day: Sunny, hot. Near steady temperature in the upper 90s. South winds around 5 mph.

Night: Mostly clear. Lows around 70. South winds around 5 mph in the evening, becoming light and variable.

Day: Sunny, hot with highs around 100. Southwest winds around 5 mph.

Night: Mostly clear. Lows around 70. Southwest winds around 5 mph.

Day: Mostly sunny. Hot with highs in the upper 90s. West winds around 5 mph.

Night: Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 20 percent.

Day: Partly 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 50 percent.

Night: Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the lower 60s. Chance of rain 50 percent.

Day: Partly sunny. A slight chance of showers in the morning. Highs in the lower 80s. Chance of rain 20 percent.

Night: Partly cloudy. Lows in the mid 50s. Highs in the lower 80s.

Night: Mostly clear. Lows in the mid 50s. Highs in the lower 80s.

Day: Sunny, hot. Near steady temperature in the mid 90s. South winds around 5 mph.

Night: Clear. Lows in the upper 60s. Southwest winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Mostly clear. Lows in the upper 60s. Southwest winds around 5 mph.

Day: Mostly sunny. Hot with highs in the upper 90s. West winds 5 to 10 mph.

Night: Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 40 percent.

Day: Partly sunny. A slight chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Hot with highs in the upper 80s. Chance of rain 60 percent.

Night: Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 50 percent.

Day: Partly sunny. Highs in the lower 80s.

Night: Partly cloudy. Lows in the mid 50s. Highs around 80.

Night: Mostly clear. Lows in the mid 50s.

Day: Mostly sunny. Highs in the lower 80s.

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the upper 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. Humid with lows around 70. Light and variable winds.

Day: Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph.

Night: Partly cloudy in the evening, then clearing. Lows around 70. Southwest winds around 5 mph in the evening, becoming light and variable.

Day: Mostly sunny. Hot with highs in the upper 90s. West winds around 5 mph.

Night: Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 50 percent.

Day: Partly sunny. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Hot with highs around 90. Chance of rain 70 percent.

Night: Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 30 percent.

Day: Partly sunny. Not as warm with highs around 80.

Night: Partly cloudy. Lows in the mid 50s. Highs around 80.

Night: Mostly clear. Lows in the lower 50s.

Day: Mostly sunny. Highs in the lower 80s.

Day: Mostly sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. Humid with lows around 70. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy in the evening, then clearing. Lows in the lower 70s. Southwest winds around 5 mph.

Day: Mostly sunny. Hot with highs in the upper 90s. West winds 5 to 10 mph.

Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 50 percent.

Day: Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then partly sunny with showers likely with a chance of thunderstorms in the afternoon. Not as hot with highs in the upper 80s. Chance of rain 70 percent.

Night: A slight chance of thunderstorms in the evening. Mostly cloudy with a slight chance of showers. Lows around 60. Chance of rain 20 percent.

Day: Partly sunny. Highs in the upper 70s.

Night: Partly cloudy. Lows in the lower 50s. Highs in the upper 70s.

Night: Mostly clear. Lows in the lower 50s.

Day: Mostly sunny. Highs around 80.

Day: Sunny, hot. Near steady temperature in the upper 90s. South winds around 5 mph.

Night: Clear. Lows around 70. South winds around 5 mph in the evening, becoming light and variable.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Mostly clear. Lows in the upper 60s. South winds around 5 mph.

Day: Mostly sunny. Hot with highs in the upper 90s. Southwest winds around 5 mph.

Night: Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 50 percent.

Day: Partly sunny. A slight chance of showers and thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Hot with highs in the upper 80s. Chance of rain 60 percent.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. Lows in the lower 60s. Chance of rain 20 percent.

Day: Partly sunny. Highs in the lower 80s.

Night: Partly cloudy in the evening, then clearing. Lows in the upper 50s.

Night: Mostly clear. Highs in the lower 80s. Lows in the mid 50s.

Day: Mostly sunny. Highs in the lower 80s.

Day: Sunny, hot. Near steady temperature in the mid 90s. South winds around 5 mph.

Night: Clear. Lows around 70. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Mostly clear. Lows in the upper 60s. Southwest winds 5 to 10 mph.

Day: Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Chance of rain 50 percent.

Day: Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then partly sunny with showers likely with a chance of thunderstorms in the afternoon. Hot with highs in the upper 80s. Chance of rain 70 percent.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. Lows in the lower 60s. Chance of rain 20 percent.

Day: Partly sunny. Highs around 80.

Night: Partly cloudy. Lows in the mid 50s. Highs around 80.

Night: Mostly clear. Lows in the mid 50s.

Day: Mostly sunny. Highs in the lower 80s.

Day: Mostly sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows around 70. South winds around 5 mph. Chance of rain 20 percent.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy in the evening, then clearing. Lows around 70. Southwest winds around 5 mph.

Day: Mostly sunny. Hot with highs in the mid 90s. West winds around 5 mph.

Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 50 percent.

Day: Mostly cloudy with a chance of showers in the morning, then partly sunny with showers likely with a chance of thunderstorms in the afternoon. Not as warm with highs in the mid 80s. Temperature falling into the upper 70s in the afternoon. Chance of rain 70 percent.

Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 50s. Chance of rain 40 percent.

Day: Partly sunny. Not as warm with highs in the mid 70s.

Night: Partly cloudy. Lows in the lower 50s. Highs in the mid 70s.

Night: Mostly clear. Lows in the lower 50s.

Day: Mostly sunny. Highs in the upper 70s.

Day: Mostly sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. South winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. Lows around 70. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy in the evening, then becoming mostly clear. Lows around 70. Southwest winds 5 to 10 mph.

Day: Mostly sunny. A slight chance of showers in the afternoon. Hot with highs in the mid 90s. West winds 5 to 10 mph. Chance of rain 20 percent.

Night: Showers likely with a chance of thunderstorms. Hot. Lows in the mid 60s. Highs in the mid 80s. Chance of rain 70 percent.

Night: A slight chance of thunderstorms in the evening. Mostly cloudy with a slight chance of showers. Lows around 60. Chance of rain 20 percent.

Day: Partly sunny. Highs in the upper 70s.

Night: Partly cloudy. Lows in the lower 50s. Highs in the upper 70s.

Night: Mostly clear. Lows in the lower 50s.

Day: Mostly sunny. Highs around 80.

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. South winds around 5 mph. Chance of rain 20 percent.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy. Lows in the lower 70s. Southwest winds around 5 mph.

Day: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. West winds 5 to 10 mph. Chance of rain 20 percent.

Night: Showers likely with a chance of thunderstorms. Lows in the mid 60s. Highs in the lower 80s. Chance of rain 70 percent.

Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 50s. Chance of rain 40 percent.

Day: Partly sunny. Highs in the lower 70s.

Night: Partly cloudy. Lows in the lower 50s. Highs in the mid 70s.

Night: Mostly clear. Lows in the lower 50s.

Day: Mostly sunny. Highs in the mid 70s.

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. Humid with lows in the lower 70s. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy. Lows in the lower 70s. Southwest winds 5 to 10 mph.

Day: Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs in the mid 90s. West winds 5 to 10 mph. Chance of rain 20 percent.

Night: Showers likely with a chance of thunderstorms. Lows in the upper 60s. Highs in the lower 80s. Chance of rain 70 percent.

Night: A slight chance of thunderstorms in the evening. Mostly cloudy with a slight chance of showers. Lows around 60. Chance of rain 20 percent.

Day: Partly sunny. Highs in the mid 70s.

Night: Partly cloudy. Lows in the mid 50s. Highs in the upper 70s.

Night: Mostly clear. Lows in the mid 50s.

Day: Mostly sunny. Highs in the upper 70s.

Day: Sunny, hot. Near steady temperature in the upper 90s. South winds around 5 mph.

Night: Clear. Lows in the lower 70s. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Mostly clear. Lows in the lower 70s. South winds around 5 mph.

Day: Mostly sunny. Hot with highs in the upper 90s. Southwest winds around 5 mph.

Night: Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 50 percent.

Day: Showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Hot with highs in the upper 80s. Chance of rain 70 percent.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. Lows in the mid 60s. Chance of rain 20 percent.

Day: Partly sunny. Highs in the lower 80s.

Night: Partly cloudy. Lows in the upper 50s.

Night: Mostly clear. Highs in the lower 80s. Lows in the upper 50s.

Day: Mostly sunny. Highs in the lower 80s.

Day: Mostly sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. South winds around 5 mph. Chance of rain 20 percent.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy. Lows in the lower 70s. Southwest winds 5 to 10 mph.

Day: Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs in the mid 90s. West winds around 5 mph. Chance of rain 20 percent.

Night: Showers likely with a chance of thunderstorms. Lows in the upper 60s. Highs in the lower 80s. Chance of rain 70 percent.

Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows around 60. Chance of rain 50 percent.

Day: Partly sunny. Highs in the mid 70s.

Night: Partly cloudy. Lows in the mid 50s. Highs in the upper 70s.

Night: Mostly clear. Lows in the mid 50s.

Day: Mostly sunny. Highs in the upper 70s.

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. Lows in the lower 70s. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. Southwest winds 5 to 10 mph.

Day: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent.

Night: Showers likely with a chance of thunderstorms. Lows in the upper 60s. Highs in the lower 80s. Chance of rain 70 percent.

Night: Partly cloudy in the evening, then becoming mostly cloudy. A 20 percent chance of showers. Lows around 60.

Day: Partly sunny. Highs in the mid 70s.

Night: Partly cloudy. Lows in the mid 50s. Highs in the upper 70s.

Night: Mostly clear. Lows in the mid 50s.

Day: Mostly sunny. Highs in the upper 70s.

Day: Sunny, hot. Near steady temperature in the mid 90s. South winds around 5 mph.

Night: Mostly clear. Lows in the lower 70s. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows around 70. South winds 5 to 10 mph.

Day: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent.

Night: Showers likely with a chance of thunderstorms. Hot. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 70 percent.

Night: Partly cloudy with a 20 percent chance of showers. Lows in the lower 60s.

Day: Partly sunny. Highs in the upper 70s.

Night: Partly cloudy. Lows in the mid 50s.

Night: Mostly clear. Highs in the upper 70s. Lows in the mid 50s.

Day: Mostly sunny. Highs around 80.

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. South winds around 5 mph. Chance of rain 20 percent.

Day: Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy. Lows in the lower 70s. Southwest winds around 5 mph.

Day: Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs in the lower 90s. West winds 5 to 10 mph. Chance of rain 20 percent.

Night: A chance of thunderstorms. Showers. Lows in the mid 60s. Chance of rain 80 percent.

Day: Showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Not as warm with highs in the upper 70s. Chance of rain 70 percent.

Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Chance of rain 50 percent.

Day: Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 70s.

Night: Partly cloudy. Lows in the lower 50s. Highs in the lower 70s.

Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 50s.

Day: Mostly sunny. Highs in the mid 70s.

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the upper 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy. Lows in the lower 70s. Southwest winds around 5 mph.

Day: Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs in the lower 90s. West winds around 5 mph. Chance of rain 50 percent.

Night: A chance of thunderstorms. Showers. Lows in the upper 60s. Chance of rain 80 percent.

Day: A slight chance of thunderstorms. Showers likely, mainly in the morning. Not as warm with highs around 80. Chance of rain 70 percent.

Night: Mostly cloudy with a 20 percent chance of showers. Lows around 60.

Day: Partly sunny. Highs in the lower 70s.

Night: Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.

Night: Mostly clear. Lows in the mid 50s.

Day: Mostly sunny. Highs in the upper 70s.

Day: Sunny, hot. Near steady temperature in the mid 90s. South winds around 5 mph.

Night: Mostly clear. Lows in the lower 70s. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. South winds 5 to 10 mph.

Day: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent.

Night: A chance of thunderstorms. Showers. Lows in the upper 60s. Chance of rain 80 percent.

Day: Becoming partly sunny in the afternoon. A slight chance of thunderstorms. Showers likely, mainly in the morning. Not as warm with highs in the lower 80s. Chance of rain 70 percent.

Night: Partly cloudy with a 20 percent chance of showers. Lows in the lower 60s.

Day: Partly sunny. Highs in the mid 70s.

Night: Partly cloudy. Lows in the mid 50s. Highs in the upper 70s.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s.

Day: Mostly sunny. Highs in the upper 70s.

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. Humid with lows in the lower 70s. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph.

Night: Mostly clear in the evening, then becoming mostly cloudy. Lows in the lower 70s. Southwest winds 5 to 10 mph.

Day: Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs in the mid 90s. West winds 5 to 10 mph. Chance of rain 20 percent.

Night: A chance of thunderstorms. Showers likely. Lows in the upper 60s. Chance of rain 70 percent.

Day: A slight chance of thunderstorms. Showers likely, mainly in the morning. Not as warm with highs in the lower 80s. Chance of rain 70 percent.

Night: Mostly cloudy with a 20 percent chance of showers. Lows around 60.

Day: Partly sunny. Highs in the mid 70s.

Night: Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.

Night: Mostly clear. Lows in the mid 50s.

Day: Mostly sunny. Highs in the upper 70s.

Day: Sunny, hot. Near steady temperature in the mid 90s. South winds around 5 mph.

Night: Mostly clear. Lows in the lower 70s. South winds around 5 mph.

Day: Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph.

Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. South winds around 5 mph.

Day: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent.

Night: Showers likely with a chance of thunderstorms. Hot. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 70 percent.

Night: Partly cloudy. A slight chance of showers in the evening. Lows in the lower 60s. Chance of rain 20 percent.

Day: Partly sunny. Highs around 80.

Night: Partly cloudy. Lows in the upper 50s.

Night: Mostly clear. Highs around 80. Lows in the upper 50s.

Day: Mostly sunny. Highs in the lower 80s.

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Mostly clear. A slight chance of showers and thunderstorms in the evening. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent.

Day: Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy. Lows in the lower 70s. Southwest winds around 5 mph.

Day: Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs in the lower 90s. West winds around 5 mph. Chance of rain 50 percent.

Night: A chance of thunderstorms. Showers. Lows in the upper 60s. Chance of rain 80 percent.

Day: A slight chance of thunderstorms. Showers likely, mainly in the morning. Not as warm with highs around 80. Chance of rain 70 percent.

Night: Mostly cloudy with a 20 percent chance of showers. Lows around 60.

Day: Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 70s.

Night: Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.

Night: Mostly clear. Lows in the mid 50s.

Day: Mostly sunny. Highs in the upper 70s.