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.

Partly Cloudy

38°F

3°C

Humidity 64%
Wind Speed NW 9 mph
Barometer 30.04 in (1017.9 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 14 Mar 12:55 am EDT
Extended Forecast for

Peru IN

  • Overnight

    Overnight: Partly cloudy, with a low around 29. Northwest wind 5 to 10 mph.

    Low: 29 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 45. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 45 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 70. Windy, with a south wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 45 mph.

    High: 70 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Windy

  • Sunday Night

    Sunday Night: Rain showers before 5am, then snow showers, possibly mixed with rain. Some thunder is also possible. Low around 28. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: Snow showers, possibly mixed with rain, becoming all snow after 8am. High near 32. Breezy. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 32 °F

    Breezy.
    Rain/Snow
    then Snow
    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of snow showers, mainly before 2am. Mostly cloudy, with a low around 14. Breezy.

    Low: 14 °F

    Chance Snow
    Showers and
    Breezy

  • Tuesday

    Tuesday: A 10 percent chance of snow showers before 8am. Mostly sunny, with a high near 27.

    High: 27 °F

    Slight Chance
    Snow Showers
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow showers after 2am. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 29. Northwest wind 5 to 10 mph.
Saturday
Mostly cloudy, with a high near 45. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 41. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 70. Windy, with a south wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 45 mph.
Sunday Night
Rain showers before 5am, then snow showers, possibly mixed with rain. Some thunder is also possible. Low around 28. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday
Snow showers, possibly mixed with rain, becoming all snow after 8am. High near 32. Breezy. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Monday Night
A 30 percent chance of snow showers, mainly before 2am. Mostly cloudy, with a low around 14. Breezy.
Tuesday
A 10 percent chance of snow showers before 8am. Mostly sunny, with a high near 27.
Tuesday Night
A 30 percent chance of snow showers after 2am. Mostly cloudy, with a low around 19.
Wednesday
A 30 percent chance of snow showers before 2pm. Mostly cloudy, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 33.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.76°N 86.07°W (Elev. 656 ft)
Last Update:
1:16 am EDT Mar 14, 2026
Forecast Valid:
1am EDT Mar 14, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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