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

58°F

14°C

Humidity 42%
Wind Speed Calm
Barometer 29.85 in (1011.4 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 15 Feb 3:55 pm EST
Extended Forecast for

3 Miles W Lagro IN

  • This Afternoon

    This Afternoon: Sunny, with a high near 54. West wind around 5 mph.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 32. Northwest wind around 5 mph becoming calm.

    Low: 32 °F

    Partly Cloudy
    then Patchy
    Fog

  • Washington's Birthday

    Washington's Birthday: Areas of fog before 11am. Otherwise, partly sunny, with a high near 56. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 56 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38. Southwest wind 5 to 10 mph.

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56. South wind 5 to 10 mph.

    High: 56 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain, mainly after 1am. Cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    Rain then
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain and thunderstorms before 10am, then a chance of rain between 10am and 1pm. Mostly sunny, with a high near 67. Breezy. Chance of precipitation is 50%.

    High: 67 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain after 1pm. Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 54. West wind around 5 mph.
Tonight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 32. Northwest wind around 5 mph becoming calm.
Washington's Birthday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 56. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 38. Southwest wind 5 to 10 mph.
Tuesday
Mostly cloudy, with a high near 56. South wind 5 to 10 mph.
Tuesday Night
A 50 percent chance of rain, mainly after 1am. Cloudy, with a low around 50.
Wednesday
A chance of rain and thunderstorms before 10am, then a chance of rain between 10am and 1pm. Mostly sunny, with a high near 67. Breezy. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 63.
Thursday Night
Rain likely and possibly a thunderstorm before 1am, then a chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 50.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Lagro IN
 40.85°N 85.8°W (Elev. 771 ft)
Last Update:
2:31 pm EST Feb 15, 2026
Forecast Valid:
4pm EST Feb 15, 2026-6pm EST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation