7-Day Forecast 39.84°N 88.94°W (Text-Only)
NWS Forecast for: Decatur IL
Issued by: National Weather Service Lincoln, IL
Last Update: 8:41 am CDT Jul 13, 2025
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  • Today

    Today: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 85. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 85 °F

    Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, with a low around 69. South wind around 5 mph becoming calm  in the evening.

    Low: 69 °F

    Mostly Cloudy


  • Monday

    Monday: Sunny, with a high near 87. Light northeast wind.

    High: 87 °F

    Sunny


  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Partly Cloudy


  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 89. South wind 3 to 7 mph.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 72. South wind 3 to 6 mph.

    Low: 72 °F

    Partly Cloudy


  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 90. Southwest wind 6 to 8 mph, with gusts as high as 15 mph.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday
    Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms



  • Today: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    Tonight: Mostly cloudy, with a low around 69. South wind around 5 mph becoming calm in the evening.

    Monday: Sunny, with a high near 87. Light northeast wind.

    Monday Night: Partly cloudy, with a low around 70. Calm wind.

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. South wind 3 to 7 mph.

    Tuesday Night: Partly cloudy, with a low around 72. South wind 3 to 6 mph.

    Wednesday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Southwest wind 6 to 8 mph, with gusts as high as 15 mph.

    Wednesday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86.

    Thursday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67.

    Friday: A chance of showers. Mostly sunny, with a high near 84.

    Friday Night: Partly cloudy, with a low around 68.

    Saturday: A chance of showers. Mostly sunny, with a high near 87.



    Decatur IL
     39.84°N 88.94°W (Elev. 692 ft)

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