Vandalia, Illinois | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Monday
    40% Chance of Storms
    88°
    Forecast night icon
    Night
    30% Chance of Storms
    69°
    Monday 5/20
    Day
    88°
    40% Chance of Storms
    Forecast day icon
    Night
    69°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Scattered showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.
    Night Details
    Mostly cloudy with scattered thunderstorms with isolated showers in the evening then partly cloudy after midnight. Lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 30 percent.
  • Forecast day icon
    Tuesday
    Sunny
    90°
    Forecast night icon
    Night
    50% Chance of Storms
    70°
    Tuesday 5/21
    Day
    90°
    Sunny
    Forecast day icon
    Night
    70°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Sunny breezy with highs in the upper 80s. South winds 10 to 15 mph with gusts up to 30 mph increasing to 20 to 25 mph with gusts up to 40 mph in the afternoon.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent.
  • Forecast day icon
    Wednesday
    60% Chance of Storms
    79°
    Forecast night icon
    Night
    50% Chance of Storms
    65°
    Wednesday 5/22
    Day
    79°
    60% Chance of Storms
    Forecast day icon
    Night
    65°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning then showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 80s. Southwest winds 10 to 15 mph. Chance of rain 60 percent.
    Night Details
    Partly cloudy with a chance of showers and thunderstorms in the evening then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Cooler with lows in the upper 50s. Chance of rain 50 percent.
  • Forecast day icon
    Thursday
    40% Chance of Storms
    81°
    Forecast night icon
    Night
    50% Chance of Storms
    64°
    Thursday 5/23
    Day
    81°
    40% Chance of Storms
    Forecast day icon
    Night
    64°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 40 percent.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 50 percent.
  • Forecast day icon
    Friday
    50% Chance of Storms
    81°
    Forecast night icon
    Night
    50% Chance of Storms
    66°
    Friday 5/24
    Day
    81°
    50% Chance of Storms
    Forecast day icon
    Night
    66°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 50 percent.
    Night Details
    Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Highs in the lower 80s. Chance of rain 50 percent.
  • Forecast day icon
    Saturday
    50% Chance of Storms
    82°
    Forecast night icon
    Night
    50% Chance of Storms
    66°
    Saturday 5/25
    Day
    82°
    50% Chance of Storms
    Forecast day icon
    Night
    66°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Highs in the lower 80s. Chance of rain 50 percent.
    Night Details
    Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Highs in the lower 80s. Chance of rain 50 percent.
  • Forecast day icon
    Sunday
    50% Chance of Storms
    84°
    Forecast night icon
    Night
    70% Chance of Storms
    68°
    Sunday 5/26
    Day
    84°
    50% Chance of Storms
    Forecast day icon
    Night
    68°
    70% Chance of Storms
    Forecast night icon
    Day Details
    Partly sunny with a chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 50 percent.
    Night Details
    Partly cloudy with a 65% chance for rain and thunderstorms. Low temperature around 68F. Dew point will be around 68F with an average humidity of 86%. Winds will be 4 mph from the S.
  • Forecast day icon
    Monday
    50% Chance of Storms
    82°
    Forecast night icon
    Night
    30% Chance of Rain
    63°
    Monday 5/27
    Day
    82°
    50% Chance of Storms
    Forecast day icon
    Night
    63°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with a 70% chance for rain and thunderstorms. High temperature around 82F. Dew point will be around 63F with an average humidity of 65%. Winds will be 4 mph from the W.
    Night Details
    Clear with a 30% chance for rain and thunderstorms. Low temperature around 63F. Dew point will be around 62F with an average humidity of 79%. Winds will be 3 mph from the NW.
  • Forecast day icon
    Tuesday
    30% Chance of Rain
    78°
    Forecast night icon
    Night
    Clear
    60°
    Tuesday 5/28
    Day
    78°
    30% Chance of Rain
    Forecast day icon
    Night
    60°
    Clear
    Forecast night icon
    Day Details
    Sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 78F. Dew point will be around 58F with an average humidity of 62%. Winds will be 5 mph from the NW.
    Night Details
    Clear. Low temperature around 60F. Dew point will be around 58F with an average humidity of 75%. Winds will be 4 mph from the NW.
  • Forecast day icon
    Wednesday
    Sunny
    75°
    Forecast night icon
    Night
    Clear
    58°
    Wednesday 5/29
    Day
    75°
    Sunny
    Forecast day icon
    Night
    58°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 75F. Dew point will be around 55F with an average humidity of 61%. Winds will be 6 mph from the NW.
    Night Details
    Clear. Low temperature around 58F. Dew point will be around 56F with an average humidity of 77%. Winds will be 6 mph from the NW.