Decatur, Illinois | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Tuesday
    Thunderstorms
    79°
    Forecast night icon
    Night
    Mostly Clear
    59°
    Tuesday 5/7
    Day
    79°
    Thunderstorms
    Forecast day icon
    Night
    59°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a 90% chance for rain and thunderstorms. High temperature around 79F. Dew point will be around 63F with an average humidity of 81%. Winds will be 1 mph from the W.
    Night Details
    Mostly clear. A slight chance of showers and thunderstorms this evening. Lows in the mid 50s. West winds 10 to 15 mph becoming southwest around 5 mph after midnight. Chance of rain 20 percent.
  • Forecast day icon
    Wednesday
    60% Chance of Storms
    79°
    Forecast night icon
    Night
    70% Chance of Storms
    59°
    Wednesday 5/8
    Day
    79°
    60% Chance of Storms
    Forecast day icon
    Night
    59°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Sunny in the morning then partly sunny with showers and thunderstorms likely in the afternoon. Highs in the lower 80s. South winds 10 to 15 mph. Chance of rain 60 percent.
    Night Details
    Showers and thunderstorms likely mainly in the evening. Lows in the upper 50s. South winds 10 to 15 mph becoming west after midnight. Chance of rain 70 percent.
  • Forecast day icon
    Thursday
    40% Chance Rain Showers
    68°
    Forecast night icon
    Night
    Mostly Cloudy
    46°
    Thursday 5/9
    Day
    68°
    40% Chance Rain Showers
    Forecast day icon
    Night
    46°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny in the morning then mostly cloudy with a chance of showers in the afternoon. Much cooler with highs in the mid 60s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 40 percent.
    Night Details
    Mostly cloudy. Cooler with lows in the upper 40s. North winds 10 to 15 mph.
  • Forecast day icon
    Friday
    Sunny
    64°
    Forecast night icon
    Night
    30% Chance Rain Showers
    50°
    Friday 5/10
    Day
    64°
    Sunny
    Forecast day icon
    Night
    50°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 60s.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. A chance of showers in the evening. Lows in the upper 40s. Chance of rain 30 percent.
  • Forecast day icon
    Saturday
    Mostly Sunny
    65°
    Forecast night icon
    Night
    Mostly Clear
    47°
    Saturday 5/11
    Day
    65°
    Mostly Sunny
    Forecast day icon
    Night
    47°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Highs in the upper 60s. Lows in the upper 40s.
    Night Details
    Mostly clear. Highs in the upper 60s. Lows in the upper 40s.
  • Forecast day icon
    Sunday
    Sunny
    70°
    Forecast night icon
    Night
    Partly Cloudy
    56°
    Sunday 5/12
    Day
    70°
    Sunny
    Forecast day icon
    Night
    56°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 70s.
    Night Details
    Partly cloudy. Lows in the mid 50s.
  • Forecast day icon
    Monday
    30% Chance of Storms
    75°
    Forecast night icon
    Night
    Partly Cloudy
    55°
    Monday 5/13
    Day
    75°
    30% Chance of Storms
    Forecast day icon
    Night
    55°
    Partly Cloudy
    Forecast night icon
    Day Details
    Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent.
    Night Details
    Partly cloudy. Lows in the upper 50s.
  • Forecast day icon
    Tuesday
    30% Chance Rain Showers
    71°
    Forecast night icon
    Night
    40% Chance of Rain
    55°
    Tuesday 5/14
    Day
    71°
    30% Chance Rain Showers
    Forecast day icon
    Night
    55°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30 percent.
    Night Details
    Mostly clear with a chance of rain. Chance of precipitation 40%. Low temperature around 55F. Dew point will be around 54F with an average humidity of 78%. Winds will be 3 mph from the SE.
  • Forecast day icon
    Wednesday
    40% Chance of Rain
    72°
    Forecast night icon
    Night
    40% Chance of Rain
    58°
    Wednesday 5/15
    Day
    72°
    40% Chance of Rain
    Forecast day icon
    Night
    58°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a chance of rain. Chance of precipitation 40%. High temperature around 72F. Dew point will be around 54F with an average humidity of 62%. Winds will be 2 mph from the SE.
    Night Details
    Clear with a chance of rain. Chance of precipitation 35%. Low temperature around 58F. Dew point will be around 54F with an average humidity of 75%. Winds will be 4 mph from the SE.
  • Forecast day icon
    Thursday
    30% Chance of Rain
    74°
    Forecast night icon
    Night
    Clear
    58°
    Thursday 5/16
    Day
    74°
    30% Chance of Rain
    Forecast day icon
    Night
    58°
    Clear
    Forecast night icon
    Day Details
    Mostly sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 74F. Dew point will be around 57F with an average humidity of 65%. Winds will be 3 mph from the S.
    Night Details
    Clear. Low temperature around 58F. Dew point will be around 56F with an average humidity of 78%. Winds will be 2 mph from the SE.