Decatur, Illinois | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Saturday
    Sunny
    51°
    Forecast night icon
    Night
    Partly Cloudy
    36°
    Saturday 4/20
    Day
    51°
    Sunny
    Forecast day icon
    Night
    36°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the lower 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
    Night Details
    Mostly cloudy in the evening then becoming partly cloudy. Areas of frost after midnight. Lows in the mid 30s. Northwest winds 10 to 15 mph diminishing to around 5 mph after midnight.
  • Forecast day icon
    Sunday
    Sunny
    56°
    Forecast night icon
    Night
    Clear
    39°
    Sunday 4/21
    Day
    56°
    Sunny
    Forecast day icon
    Night
    39°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Areas of frost in the morning. Sunny. Highs in the upper 50s. Northwest winds 10 to 15 mph.
    Night Details
    Clear. Lows in the mid 30s. West winds 5 to 10 mph.
  • Forecast day icon
    Monday
    Sunny
    63°
    Forecast night icon
    Night
    Mostly Cloudy
    49°
    Monday 4/22
    Day
    63°
    Sunny
    Forecast day icon
    Night
    49°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 60s. Southwest winds 5 to 10 mph increasing to 15 to 20 mph in the afternoon.
    Night Details
    Mostly cloudy. Not as cool with lows around 50.
  • Forecast day icon
    Tuesday
    70% Chance Rain Showers
    64°
    Forecast night icon
    Night
    30% Chance Rain Showers
    45°
    Tuesday 4/23
    Day
    64°
    70% Chance Rain Showers
    Forecast day icon
    Night
    45°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. A chance of showers in the morning then showers likely in the afternoon. Highs in the upper 60s. Chance of rain 70 percent.
    Night Details
    Partly cloudy with a chance of showers in the evening then mostly clear after midnight. Lows in the lower 40s. Chance of rain 30 percent.
  • Forecast day icon
    Wednesday
    Mostly Sunny
    63°
    Forecast night icon
    Night
    Mostly Clear
    42°
    Wednesday 4/24
    Day
    63°
    Mostly Sunny
    Forecast day icon
    Night
    42°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Highs around 60. Lows in the upper 30s.
    Night Details
    Mostly clear. Highs around 60. Lows in the upper 30s.
  • Forecast day icon
    Thursday
    Mostly Sunny
    65°
    Forecast night icon
    Night
    40% Chance Rain Showers
    53°
    Thursday 4/25
    Day
    65°
    Mostly Sunny
    Forecast day icon
    Night
    53°
    40% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 60s.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. A 40 percent chance of showers. Lows in the upper 40s.
  • Forecast day icon
    Friday
    50% Chance Rain Showers
    70°
    Forecast night icon
    Night
    70% Chance of Storms
    56°
    Friday 4/26
    Day
    70°
    50% Chance Rain Showers
    Forecast day icon
    Night
    56°
    70% Chance of Storms
    Forecast night icon
    Day Details
    Mostly cloudy. A chance of showers. Highs in the upper 60s. Chance of rain 50 percent.
    Night Details
    Mostly cloudy with a 65% chance for rain and thunderstorms. Low temperature around 56F. Dew point will be around 58F with an average humidity of 91%. Winds will be 9 mph from the SE.
  • Forecast day icon
    Saturday
    70% Chance of Rain
    75°
    Forecast night icon
    Night
    50% Chance of Rain
    60°
    Saturday 4/27
    Day
    75°
    70% Chance of Rain
    Forecast day icon
    Night
    60°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a 65% chance for rain and thunderstorms. High temperature around 75F. Dew point will be around 58F with an average humidity of 73%. Winds will be 7 mph from the S.
    Night Details
    Mostly cloudy with a 50% chance for rain and thunderstorms. Low temperature around 60F. Dew point will be around 60F with an average humidity of 85%. Winds will be 7 mph from the SE.
  • Forecast day icon
    Sunday
    70% Chance of Storms
    78°
    Forecast night icon
    Night
    70% Chance of Storms
    62°
    Sunday 4/28
    Day
    78°
    70% Chance of Storms
    Forecast day icon
    Night
    62°
    70% Chance of Storms
    Forecast night icon
    Day Details
    Mostly cloudy with a 75% chance for rain and thunderstorms. High temperature around 78F. Dew point will be around 63F with an average humidity of 74%. Winds will be 11 mph from the S.
    Night Details
    Partly cloudy with a 80% chance for rain and thunderstorms. Low temperature around 62F. Dew point will be around 63F with an average humidity of 86%. Winds will be 8 mph from the S.
  • Forecast day icon
    Monday
    60% Chance of Storms
    77°
    Forecast night icon
    Night
    50% Chance of Rain
    59°
    Monday 4/29
    Day
    77°
    60% Chance of Storms
    Forecast day icon
    Night
    59°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a 65% chance for rain and thunderstorms. High temperature around 77F. Dew point will be around 60F with an average humidity of 68%. Winds will be 8 mph from the SW.
    Night Details
    Mostly clear with a 50% chance for rain and thunderstorms. Low temperature around 59F. Dew point will be around 58F with an average humidity of 78%. Winds will be 4 mph from the SW.