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

53°F

12°C

Humidity 89%
Wind Speed Calm
Barometer 30.14 in (1020.8 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 23 Jul 4:55 am EDT
Extended Forecast for

2 Miles W Lagro IN

  • Today

    Today: Sunny, with a high near 77. Calm wind becoming northeast around 5 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 78. Calm wind.

    High: 78 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 77. Calm wind becoming northeast around 5 mph.
Tonight
Partly cloudy, with a low around 55. Calm wind.
Friday
Partly sunny, with a high near 78. Calm wind.
Friday Night
Mostly clear, with a low around 57. Calm wind.
Saturday
Mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 69.
Monday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Monday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Tuesday Night
A slight chance of thunderstorms. Mostly clear, with a low around 64. Chance of precipitation is 10%.
Wednesday
Sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Lagro IN
 40.83°N 85.78°W (Elev. 751 ft)
Last Update:
5:30 am EDT Jul 23, 2026
Forecast Valid:
5am EDT Jul 23, 2026-6pm EDT Jul 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