7-Day Forecast 40.65°N 86.14°W (Text-Only)
NWS Forecast for: Grissom Air Force Base / Peru IN
Issued by: National Weather Service Northern Indiana
Last Update: 10:47 am EDT Jul 13, 2025
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  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 5pm.  Partly sunny, with a high near 85. West wind around 5 mph.

    High: 85 °F

    Chance
    T-storms


  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 2am.  Mostly cloudy, with a low around 66. West wind around 5 mph becoming calm  in the evening.

    Low: 66 °F

    Chance
    T-storms


  • Monday

    Monday: Mostly sunny, with a high near 86. Calm wind becoming northeast around 5 mph.

    High: 86 °F

    Mostly Sunny



  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy



  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 71. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms


  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 88. Chance of precipitation is 70%.

    High: 88 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday
    Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm.  Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms


  • Today: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 85. West wind around 5 mph.

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 66. West wind around 5 mph becoming calm in the evening.

    Monday: Mostly sunny, with a high near 86. Calm wind becoming northeast around 5 mph.

    Monday Night: Partly cloudy, with a low around 68. Calm wind.

    Tuesday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

    Thursday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.

    Friday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.

    Friday Night: A 30 percent chance of showers. Partly cloudy, with a low around 64.

    Saturday: A chance of showers and thunderstorms. Mostly sunny, with a high near 84.



    Grissom Air Force Base / Peru IN
     40.65°N 86.14°W (Elev. 804 ft)

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