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.

Fair

-9°C

16°F

Humidity 75%
Wind Speed S 11 km/h
Barometer 1020.1 mb (30.08 in)
Dewpoint -12°C (10°F)
Visibility 16 km
Wind Chill-14°C (6°F)
Last update 9 Dec 1:55 am EST
Extended Forecast for

Grissom Air Force Base / Peru IN

  • Overnight

    Overnight: A 20 percent chance of snow after 4am. Mostly cloudy, with a low around -12. South wind 15 to 20 km/h.

    Low: -12 °C

    Slight Chance
    Snow

  • Tuesday

    Tuesday: A 10 percent chance of snow before 7am. Partly sunny, with a high near 3. Southwest wind 25 to 30 km/h, with gusts as high as 50 km/h.

    High: 3 °C

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain, mainly after 1am. Low around 1. Breezy, with a southwest wind 25 to 30 km/h increasing to 35 to 40 km/h after midnight. Winds could gust as high as 65 km/h. Chance of precipitation is 80%. New precipitation amounts between 2.5 and 5 mm possible.

    Low: 1 °C

    Breezy.
    Chance Rain
    then Rain

  • Wednesday

    Wednesday: Rain before 10am, then snow. High near 4. Breezy, with a west wind 30 to 35 km/h, with gusts as high as 60 km/h. Chance of precipitation is 80%. New snow accumulation of less than a half centimeter possible.

    High: 4 °C

    Breezy.
    Rain/Snow
    then Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before 1am. Mostly cloudy, with a low around -6. Northwest wind 15 to 25 km/h, with gusts as high as 50 km/h.

    Low: -6 °C

    Slight Chance
    Snow

  • Thursday

    Thursday: A 30 percent chance of snow, mainly after 1pm. Partly sunny, with a high near -2.

    High: -2 °C

    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Mostly cloudy, with a low around -7.

    Low: -7 °C

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow. Mostly cloudy, with a high near -1.

    High: -1 °C

    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -13.

    Low: -13 °C

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow after 4am. Mostly cloudy, with a low around -12. South wind 15 to 20 km/h.
Tuesday
A 10 percent chance of snow before 7am. Partly sunny, with a high near 3. Southwest wind 25 to 30 km/h, with gusts as high as 50 km/h.
Tuesday Night
Rain, mainly after 1am. Low around 1. Breezy, with a southwest wind 25 to 30 km/h increasing to 35 to 40 km/h after midnight. Winds could gust as high as 65 km/h. Chance of precipitation is 80%. New precipitation amounts between 2.5 and 5 mm possible.
Wednesday
Rain before 10am, then snow. High near 4. Breezy, with a west wind 30 to 35 km/h, with gusts as high as 60 km/h. Chance of precipitation is 80%. New snow accumulation of less than a half centimeter possible.
Wednesday Night
A 20 percent chance of snow before 1am. Mostly cloudy, with a low around -6. Northwest wind 15 to 25 km/h, with gusts as high as 50 km/h.
Thursday
A 30 percent chance of snow, mainly after 1pm. Partly sunny, with a high near -2.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around -7.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near -1.
Friday Night
Mostly cloudy, with a low around -13.
Saturday
Mostly cloudy and cold, with a high near -9.
Saturday Night
Mostly cloudy, with a low around -17.
Sunday
Mostly sunny and cold, with a high near -10.
Sunday Night
Partly cloudy, with a low around -17.
Monday
A chance of snow. Mostly cloudy, with a high near -4.
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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 m)
Last Update:
2:01 am EST Dec 9, 2025
Forecast Valid:
2am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
Forecast Discussion
 
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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