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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

2 Miles WSW Peru IN

  • Overnight

    Overnight: Clear, with a low around 56. Calm wind.

    Low: 56 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. Heat index values as high as 95. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southwest wind around 5 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 11am. Mostly sunny and hot, with a high near 92. Chance of precipitation is 50%.

    High: 92 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 10 percent chance of showers before 8am. Mostly sunny, with a high near 87.

    High: 87 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 56. Calm wind.
Saturday
Mostly sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. Heat index values as high as 95. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southwest wind around 5 mph. Chance of precipitation is 20%.
Monday
A chance of showers, with thunderstorms also possible after 11am. Mostly sunny and hot, with a high near 92. Chance of precipitation is 50%.
Monday Night
Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
Tuesday
A 10 percent chance of showers before 8am. Mostly sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 86.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 66.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Peru IN
 40.76°N 86.1°W (Elev. 650 ft)
Last Update:
1:14 am EDT Jul 25, 2026
Forecast Valid:
2am EDT Jul 25, 2026-6pm EDT Jul 31, 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