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.

Overcast

39°F

4°C

Humidity 58%
Wind Speed N 17 mph
Barometer 30.34 in (1028.3 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 23 Mar 12:55 pm EDT
Extended Forecast for

Peru IN

  • This Afternoon

    This Afternoon: Mostly cloudy, then gradually becoming sunny, with a high near 44. North wind around 15 mph, with gusts as high as 20 mph.

    High: 44 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 27. North wind 5 to 10 mph becoming light and variable after midnight.

    Low: 27 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 53. Calm wind becoming south around 5 mph in the morning.

    High: 53 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. Southeast wind around 5 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 67. Southwest wind 5 to 15 mph.

    High: 67 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 40%.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 36. Chance of precipitation is 70%.

    Low: 36 °F

    Showers
    Likely

  • Friday

    Friday: A chance of rain and snow showers, mainly before 8am. Partly sunny, with a high near 46. Chance of precipitation is 30%.

    High: 46 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Mostly cloudy, then gradually becoming sunny, with a high near 44. North wind around 15 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 27. North wind 5 to 10 mph becoming light and variable after midnight.
Tuesday
Mostly sunny, with a high near 53. Calm wind becoming south around 5 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 36. Southeast wind around 5 mph.
Wednesday
Mostly cloudy, with a high near 67. Southwest wind 5 to 15 mph.
Wednesday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 53.
Thursday
A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 36. Chance of precipitation is 70%.
Friday
A chance of rain and snow showers, mainly before 8am. Partly sunny, with a high near 46. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 52.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Partly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.75°N 86.04°W (Elev. 646 ft)
Last Update:
1:15 pm EDT Mar 23, 2026
Forecast Valid:
1pm EDT Mar 23, 2026-6pm EDT Mar 29, 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