National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Fair

69°F

21°C

Humidity 69%
Wind Speed W 5 mph
Barometer 30.05 in (1017.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 24 Aug 10:55 am EDT
Extended Forecast for

3 Miles E Peru IN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 76. Northwest wind 5 to 10 mph.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 52. North wind around 5 mph becoming calm.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. Calm wind.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 81. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 81.

    High: 81 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 76. Northwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 52. North wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 78. Calm wind.
Tuesday Night
Partly cloudy, with a low around 57. Calm wind.
Wednesday
A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 81. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 62.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 60.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Peru IN
 40.75°N 86.02°W (Elev. 650 ft)
Last Update:
9:31 am EDT Aug 24, 2026
Forecast Valid:
12pm EDT Aug 24, 2026-6pm EDT Aug 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation