Decatur, Illinois | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Sunday
    Sunny
    81°
    Forecast night icon
    Night
    Partly Cloudy
    61°
    Sunday 5/12
    Day
    81°
    Sunny
    Forecast day icon
    Night
    61°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Near steady temperature in the lower 80s. Southwest winds 10 to 15 mph.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. South winds 10 to 15 mph.
  • Forecast day icon
    Monday
    80% Chance of Storms
    73°
    Forecast night icon
    Night
    Thunderstorms
    62°
    Monday 5/13
    Day
    73°
    80% Chance of Storms
    Forecast day icon
    Night
    62°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers with a slight chance of thunderstorms in the morning then mostly cloudy with showers with a chance of thunderstorms in the afternoon. Highs in the mid 70s. Temperature falling into the upper 60s in the afternoon. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 80 percent.
    Night Details
    A chance of thunderstorms. Showers. Lows around 60. Southeast winds 10 to 15 mph. Chance of rain 90 percent.
  • Forecast day icon
    Tuesday
    70% Chance of Storms
    67°
    Forecast night icon
    Night
    Partly Cloudy
    52°
    Tuesday 5/14
    Day
    67°
    70% Chance of Storms
    Forecast day icon
    Night
    52°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    A chance of thunderstorms. Showers likely mainly in the morning. Highs in the upper 60s. Northeast winds 15 to 20 mph. Chance of rain 70 percent.
    Night Details
    Mostly cloudy in the evening then becoming partly cloudy. Cooler with lows around 50.
  • Forecast day icon
    Wednesday
    Sunny
    72°
    Forecast night icon
    Night
    Partly Cloudy
    54°
    Wednesday 5/15
    Day
    72°
    Sunny
    Forecast day icon
    Night
    54°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the lower 70s.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Thursday
    40% Chance Rain Showers
    75°
    Forecast night icon
    Night
    50% Chance of Storms
    61°
    Thursday 5/16
    Day
    75°
    40% Chance Rain Showers
    Forecast day icon
    Night
    61°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 40 percent.
    Night Details
    Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 50s. Chance of rain 50 percent.
  • Forecast day icon
    Friday
    40% Chance of Storms
    76°
    Forecast night icon
    Night
    Partly Cloudy
    61°
    Friday 5/17
    Day
    76°
    40% Chance of Storms
    Forecast day icon
    Night
    61°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 40 percent.
    Night Details
    Partly cloudy. Lows in the upper 50s.
  • Forecast day icon
    Saturday
    Sunny
    77°
    Forecast night icon
    Night
    30% Chance of Rain
    62°
    Saturday 5/18
    Day
    77°
    Sunny
    Forecast day icon
    Night
    62°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny. Highs in the upper 70s.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 62F. Dew point will be around 62F with an average humidity of 82%. Winds will be 2 mph from the W.
  • Forecast day icon
    Sunday
    30% Chance of Rain
    78°
    Forecast night icon
    Night
    40% Chance of Rain
    58°
    Sunday 5/19
    Day
    78°
    30% Chance of Rain
    Forecast day icon
    Night
    58°
    40% Chance of Rain
    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 60F with an average humidity of 64%. Winds will be 4 mph from the W.
    Night Details
    Mostly clear with a chance of rain. Chance of precipitation 35%. Low temperature around 58F. Dew point will be around 57F with an average humidity of 79%. Winds will be 5 mph from the W.
  • Forecast day icon
    Monday
    30% Chance of Rain
    74°
    Forecast night icon
    Night
    30% Chance of Rain
    57°
    Monday 5/20
    Day
    74°
    30% Chance of Rain
    Forecast day icon
    Night
    57°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 74F. Dew point will be around 54F with an average humidity of 61%. Winds will be 6 mph from the W.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 57F. Dew point will be around 54F with an average humidity of 76%. Winds will be 4 mph from the W.
  • Forecast day icon
    Tuesday
    30% Chance of Rain
    73°
    Forecast night icon
    Night
    40% Chance of Rain
    58°
    Tuesday 5/21
    Day
    73°
    30% Chance of Rain
    Forecast day icon
    Night
    58°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 73F. Dew point will be around 54F with an average humidity of 62%. Winds will be 3 mph from the NW.
    Night Details
    Mostly clear with a chance of rain. Chance of precipitation 35%. Low temperature around 58F. Dew point will be around 55F with an average humidity of 80%. Winds will be 2 mph from the W.