Decatur, Iowa | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    70% Chance of Storms
    68°
    Sunday 5/19
    Forecast night icon
    68°
    70% Chance of Storms
    Hourly
    Night Details
    Showers and thunderstorms likely. Some thunderstorms may be severe with damaging winds and large hail late this evening. Some thunderstorms may produce damaging winds and large hail. Lows in the mid 60s. East winds around 5 mph becoming south. Chance of rain 70 percent.
  • Forecast day icon
    Monday
    60% Chance of Storms
    78°
    Forecast night icon
    Night
    60% Chance of Storms
    67°
    Monday 5/20
    Day
    78°
    60% Chance of Storms
    Forecast day icon
    Night
    67°
    60% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with showers and thunderstorms likely in the morning then partly sunny with a chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 80s. South winds around 10 mph. Chance of rain 60 percent.
    Night Details
    Showers likely with a chance of thunderstorms. Humid with lows in the mid 60s. Southeast winds 5 to 10 mph. Chance of rain 60 percent.
  • Forecast day icon
    Tuesday
    80% Chance of Storms
    82°
    Forecast night icon
    Night
    50% Chance of Storms
    53°
    Tuesday 5/21
    Day
    82°
    80% Chance of Storms
    Forecast day icon
    Night
    53°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of thunderstorms. A chance of showers in the morning then showers in the afternoon. Humid with highs in the mid 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 80 percent.
    Night Details
    Mostly clear. A chance of showers and thunderstorms in the evening. Less humid with lows in the lower 50s. West winds 15 to 20 mph diminishing to around 10 mph after midnight. Chance of rain 50 percent.
  • Forecast day icon
    Wednesday
    Sunny
    74°
    Forecast night icon
    Night
    Mostly Clear
    55°
    Wednesday 5/22
    Day
    74°
    Sunny
    Forecast day icon
    Night
    55°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the lower 70s.
    Night Details
    Mostly clear. Lows in the upper 40s.
  • Forecast day icon
    Thursday
    Sunny
    79°
    Forecast night icon
    Night
    30% Chance Rain Showers
    62°
    Thursday 5/23
    Day
    79°
    Sunny
    Forecast day icon
    Night
    62°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 70s.
    Night Details
    Partly cloudy. A chance of showers after midnight. Lows in the upper 50s. Chance of rain 30 percent.
  • Forecast day icon
    Friday
    60% Chance of Storms
    79°
    Forecast night icon
    Night
    50% Chance of Storms
    62°
    Friday 5/24
    Day
    79°
    60% Chance of Storms
    Forecast day icon
    Night
    62°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of thunderstorms. A chance of showers in the morning then showers likely in the afternoon. Highs in the upper 70s. Chance of rain 60 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
    Saturday
    40% Chance of Storms
    78°
    Forecast night icon
    Night
    40% Chance of Storms
    59°
    Saturday 5/25
    Day
    78°
    40% Chance of Storms
    Forecast day icon
    Night
    59°
    40% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers and thunderstorms. Highs in the mid 70s. Chance of rain 40 percent.
    Night Details
    A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 50s. Chance of rain 40 percent.
  • Forecast day icon
    Sunday
    50% Chance Rain Showers
    79°
    Forecast night icon
    Night
    60% Chance of Storms
    63°
    Sunday 5/26
    Day
    79°
    50% Chance Rain Showers
    Forecast day icon
    Night
    63°
    60% Chance of Storms
    Forecast night icon
    Day Details
    Mostly sunny with a chance of showers. Highs in the mid 70s. Chance of rain 50 percent.
    Night Details
    Partly cloudy with a 75% chance for rain and thunderstorms. Low temperature around 63F. Dew point will be around 61F with an average humidity of 79%. Winds will be 4 mph from the SE.
  • Forecast day icon
    Monday
    40% Chance of Rain
    78°
    Forecast night icon
    Night
    30% Chance of Rain
    59°
    Monday 5/27
    Day
    78°
    40% Chance of Rain
    Forecast day icon
    Night
    59°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a 40% chance for rain and thunderstorms. High temperature around 78F. Dew point will be around 60F with an average humidity of 68%. Winds will be 1 mph from the E.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 59F. Dew point will be around 57F with an average humidity of 76%. Winds will be 3 mph from the NW.
  • Forecast day icon
    Tuesday
    30% Chance of Rain
    75°
    Forecast night icon
    Night
    Clear
    57°
    Tuesday 5/28
    Day
    75°
    30% Chance of Rain
    Forecast day icon
    Night
    57°
    Clear
    Forecast night icon
    Day Details
    Sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 75F. Dew point will be around 56F with an average humidity of 65%. Winds will be 6 mph from the NW.
    Night Details
    Clear. Low temperature around 57F. Dew point will be around 55F with an average humidity of 75%. Winds will be 6 mph from the NW.