Decatur, Illinois | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Saturday
    50% Chance of Storms
    81°
    Forecast night icon
    Night
    Thunderstorms
    55°
    Saturday 5/4
    Day
    81°
    50% Chance of Storms
    Forecast day icon
    Night
    55°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 80s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.
    Night Details
    Mostly cloudy. Showers with thunderstorms likely in the evening. Lows in the mid 50s. West winds 10 to 15 mph becoming northwest after midnight. Chance of rain 90 percent.
  • Forecast day icon
    Sunday
    Partly Sunny
    70°
    Forecast night icon
    Night
    Mostly Cloudy
    57°
    Sunday 5/5
    Day
    70°
    Partly Sunny
    Forecast day icon
    Night
    57°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Cooler with highs in the lower 70s. North winds 5 to 10 mph.
    Night Details
    Mostly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph.
  • Forecast day icon
    Monday
    60% Chance Rain Showers
    72°
    Forecast night icon
    Night
    70% Chance of Storms
    63°
    Monday 5/6
    Day
    72°
    60% Chance Rain Showers
    Forecast day icon
    Night
    63°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A chance of showers in the morning then showers likely in the afternoon. Highs in the mid 70s. Southeast winds 10 to 15 mph. Chance of rain 60 percent.
    Night Details
    Partly cloudy in the evening then showers likely with a chance of thunderstorms after midnight. Lows in the lower 60s. Chance of rain 70 percent.
  • Forecast day icon
    Tuesday
    80% Chance of Storms
    77°
    Forecast night icon
    Night
    50% Chance of Storms
    55°
    Tuesday 5/7
    Day
    77°
    80% Chance of Storms
    Forecast day icon
    Night
    55°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    A chance of thunderstorms. Showers. Highs in the upper 70s. Chance of rain 80 percent.
    Night Details
    Mostly clear. A chance of showers and thunderstorms in the evening. Lows around 60. Chance of rain 50 percent.
  • Forecast day icon
    Wednesday
    70% Chance of Storms
    79°
    Forecast night icon
    Night
    70% Chance of Storms
    59°
    Wednesday 5/8
    Day
    79°
    70% Chance of Storms
    Forecast day icon
    Night
    59°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the morning then showers likely with a chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 70 percent.
    Night Details
    Showers and thunderstorms likely in the evening then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the upper 50s. Chance of rain 70 percent.
  • Forecast day icon
    Thursday
    30% Chance Rain Showers
    72°
    Forecast night icon
    Night
    30% Chance Rain Showers
    51°
    Thursday 5/9
    Day
    72°
    30% Chance Rain Showers
    Forecast day icon
    Night
    51°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 30 percent.
    Night Details
    Partly cloudy. A chance of showers in the evening. Lows in the lower 50s. Chance of rain 30 percent.
  • Forecast day icon
    Friday
    Mostly Sunny
    64°
    Forecast night icon
    Night
    Partly Cloudy
    45°
    Friday 5/10
    Day
    64°
    Mostly Sunny
    Forecast day icon
    Night
    45°
    Partly Cloudy
    Forecast night icon
    Day Details
    Mostly sunny. Highs in the upper 60s.
    Night Details
    Partly cloudy. Low temperature around 45F. Dew point will be around 44F with an average humidity of 69%. Winds will be 4 mph from the NW.
  • Forecast day icon
    Saturday
    Sunny
    64°
    Forecast night icon
    Night
    Partly Cloudy
    48°
    Saturday 5/11
    Day
    64°
    Sunny
    Forecast day icon
    Night
    48°
    Partly Cloudy
    Forecast night icon
    Day Details
    Sunny. High temperature around 64F. Dew point will be around 40F with an average humidity of 53%. Winds will be 9 mph from the N.
    Night Details
    Partly cloudy. Low temperature around 48F. Dew point will be around 45F with an average humidity of 73%. Winds will be 4 mph from the W.
  • Forecast day icon
    Sunday
    Sunny
    69°
    Forecast night icon
    Night
    Mostly Clear
    53°
    Sunday 5/12
    Day
    69°
    Sunny
    Forecast day icon
    Night
    53°
    Mostly Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 69F. Dew point will be around 46F with an average humidity of 56%. Winds will be 5 mph from the W.
    Night Details
    Mostly clear. Low temperature around 53F. Dew point will be around 50F with an average humidity of 75%. Winds will be 3 mph from the SW.
  • Forecast day icon
    Monday
    Mostly Sunny
    69°
    Forecast night icon
    Night
    30% Chance of Rain
    52°
    Monday 5/13
    Day
    69°
    Mostly Sunny
    Forecast day icon
    Night
    52°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 69F. Dew point will be around 50F with an average humidity of 62%. Winds will be 1 mph from the SW.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 52F. Dew point will be around 50F with an average humidity of 76%. Winds will be 3 mph from the E.