Alton, Missouri | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Friday
    Mostly Sunny
    72°
    Forecast night icon
    Night
    Mostly Clear
    53°
    Friday 5/10
    Day
    72°
    Mostly Sunny
    Forecast day icon
    Night
    53°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 70s. North winds 5 to 10 mph.
    Night Details
    Mostly clear. Lows in the lower 50s. West winds 5 to 10 mph.
  • Forecast day icon
    Saturday
    Sunny
    78°
    Forecast night icon
    Night
    Partly Cloudy
    55°
    Saturday 5/11
    Day
    78°
    Sunny
    Forecast day icon
    Night
    55°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 70s. Northwest winds 5 to 10 mph.
    Night Details
    Partly cloudy in the evening then clearing. Lows in the lower 50s. North winds around 5 mph becoming northeast around 5 mph after midnight.
  • Forecast day icon
    Sunday
    Mostly Sunny
    79°
    Forecast night icon
    Night
    Mostly Cloudy
    60°
    Sunday 5/12
    Day
    79°
    Mostly Sunny
    Forecast day icon
    Night
    60°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs around 80. South winds 5 to 10 mph.
    Night Details
    Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 50s. Chance of rain 20 percent.
  • Forecast day icon
    Monday
    Thunderstorms
    69°
    Forecast night icon
    Night
    60% Chance of Storms
    60°
    Monday 5/13
    Day
    69°
    Thunderstorms
    Forecast day icon
    Night
    60°
    60% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Showers with a chance of thunderstorms. Highs in the lower 70s. Chance of rain 90 percent.
    Night Details
    A chance of thunderstorms. Showers likely mainly in the evening. Lows in the upper 50s. Chance of rain 60 percent.
  • Forecast day icon
    Tuesday
    50% Chance of Storms
    74°
    Forecast night icon
    Night
    Partly Cloudy
    57°
    Tuesday 5/14
    Day
    74°
    50% Chance of Storms
    Forecast day icon
    Night
    57°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning then a chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 50 percent.
    Night Details
    Partly cloudy in the evening then becoming mostly clear. Lows in the mid 50s.
  • Forecast day icon
    Wednesday
    Mostly Sunny
    79°
    Forecast night icon
    Night
    30% Chance of Storms
    61°
    Wednesday 5/15
    Day
    79°
    Mostly Sunny
    Forecast day icon
    Night
    61°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. A chance of showers with a slight chance of thunderstorms. Lows around 60. Chance of rain 30 percent.
  • Forecast day icon
    Thursday
    50% Chance of Storms
    74°
    Forecast night icon
    Night
    60% Chance of Rain
    58°
    Thursday 5/16
    Day
    74°
    50% Chance of Storms
    Forecast day icon
    Night
    58°
    60% Chance of Rain
    Forecast night icon
    Day Details
    Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning then a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 50 percent.
    Night Details
    Mostly cloudy with a 55% chance for rain and thunderstorms. Low temperature around 58F. Dew point will be around 58F with an average humidity of 83%. Winds will be 6 mph from the NW.
  • Forecast day icon
    Friday
    40% Chance of Rain
    72°
    Forecast night icon
    Night
    Clear
    54°
    Friday 5/17
    Day
    72°
    40% Chance of Rain
    Forecast day icon
    Night
    54°
    Clear
    Forecast night icon
    Day Details
    Mostly cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 72F. Dew point will be around 53F with an average humidity of 66%. Winds will be 8 mph from the NW.
    Night Details
    Clear. Low temperature around 54F. Dew point will be around 52F with an average humidity of 73%. Winds will be 4 mph from the NW.
  • Forecast day icon
    Saturday
    Sunny
    75°
    Forecast night icon
    Night
    Clear
    56°
    Saturday 5/18
    Day
    75°
    Sunny
    Forecast day icon
    Night
    56°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 75F. Dew point will be around 53F with an average humidity of 63%. Winds will be 5 mph from the W.
    Night Details
    Clear. Low temperature around 56F. Dew point will be around 54F with an average humidity of 72%. Winds will be 2 mph from the W.
  • Forecast day icon
    Sunday
    Sunny
    74°
    Forecast night icon
    Night
    Clear
    57°
    Sunday 5/19
    Day
    74°
    Sunny
    Forecast day icon
    Night
    57°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 74F. Dew point will be around 53F with an average humidity of 63%. Winds will be 2 mph from the NW.
    Night Details
    Clear. Low temperature around 57F. Dew point will be around 54F with an average humidity of 71%. Winds will be 1 mph from the SE.