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.

Partly Cloudy

38°F

3°C

Humidity 58%
Wind Speed W 6 mph
Barometer 30.26 in (1025.8 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 12 Feb 12:55 pm EST
Extended Forecast for

Peru IN

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 39. Northwest wind around 5 mph.

    High: 39 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 24. Northeast wind around 5 mph becoming calm.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 47. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29. Southwest wind around 5 mph becoming calm after midnight.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 50. Calm wind becoming south around 5 mph in the afternoon.

    High: 50 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

  • Sunday

    Sunday: A 20 percent chance of rain before 1pm. Mostly sunny, with a high near 51.

    High: 51 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 39. Northwest wind around 5 mph.
Tonight
Partly cloudy, with a low around 24. Northeast wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 47. Light south wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 29. Southwest wind around 5 mph becoming calm after midnight.
Saturday
Partly sunny, with a high near 50. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
A 30 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 35.
Sunday
A 20 percent chance of rain before 1pm. Mostly sunny, with a high near 51.
Sunday Night
Mostly clear, with a low around 31.
Washington's Birthday
Partly sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
Mostly cloudy, with a high near 56.
Tuesday Night
A 30 percent chance of rain. Cloudy, with a low around 48.
Wednesday
A chance of rain. Partly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.76°N 86.07°W (Elev. 656 ft)
Last Update:
11:47 am EST Feb 12, 2026
Forecast Valid:
1pm EST Feb 12, 2026-6pm EST Feb 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation