National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

A Few Clouds

23°F

-5°C

Humidity 64%
Wind Speed E 8 mph
Barometer 30.29 in (1027.2 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 8 Dec 12:55 pm EST
Extended Forecast for

Grissom Air Force Base / Peru IN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 26. East wind around 5 mph.

    High: 26 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 13. Southeast wind 5 to 15 mph becoming south after midnight.

    Low: 13 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 39. Southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 39 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 1am. Cloudy, with a low around 33. Southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.

    Low: 33 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday

    Wednesday: Rain likely before 10am, then rain and snow likely between 10am and 1pm, then a chance of snow after 1pm. Cloudy, with a high near 39. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before 1am. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: A 20 percent chance of snow. Mostly cloudy, with a high near 27.

    High: 27 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Slight Chance
    Snow

  • Friday

    Friday: A 30 percent chance of snow, mainly after 1pm. Mostly cloudy, with a high near 26.

    High: 26 °F

    Chance Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 26. East wind around 5 mph.
Tonight
Mostly cloudy, with a low around 13. Southeast wind 5 to 15 mph becoming south after midnight.
Tuesday
Partly sunny, with a high near 39. Southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Rain likely, mainly after 1am. Cloudy, with a low around 33. Southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.
Wednesday
Rain likely before 10am, then rain and snow likely between 10am and 1pm, then a chance of snow after 1pm. Cloudy, with a high near 39. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 20 percent chance of snow before 1am. Mostly cloudy, with a low around 20.
Thursday
A 20 percent chance of snow. Mostly cloudy, with a high near 27.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 16.
Friday
A 30 percent chance of snow, mainly after 1pm. Mostly cloudy, with a high near 26.
Friday Night
A 20 percent chance of snow before 1am. Mostly cloudy, with a low around 3.
Saturday
Partly sunny and cold, with a high near 13.
Saturday Night
Mostly cloudy, with a low around 2.
Sunday
Partly sunny and cold, with a high near 19.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grissom Air Force Base / Peru IN
 40.65°N 86.14°W (Elev. 804 ft)
Last Update:
12:17 pm EST Dec 8, 2025
Forecast Valid:
1pm EST Dec 8, 2025-6pm EST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation