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.

A Few Clouds

42°F

6°C

Humidity 67%
Wind Speed SE 7 mph
Barometer 30.11 in (1020.3 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 17 Apr 7:55 am EDT
Extended Forecast for

Grissom Air Force Base / Peru IN

  • Today

    Today: A 30 percent chance of showers, mainly after 5pm. Increasing clouds, with a high near 63. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 63 °F

    Mostly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 54. South wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 54 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 40 mph.

    High: 77 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 56. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 11am, then showers likely. High near 63. Northwest wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 63 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.

    High: 62 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.

    Low: 47 °F

    Showers
    Likely

  • Monday

    Monday: A 30 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 62.

    High: 62 °F

    Chance
    Showers

Detailed Forecast

Today
A 30 percent chance of showers, mainly after 5pm. Increasing clouds, with a high near 63. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 54. South wind 15 to 20 mph, with gusts as high as 30 mph.
Friday
Mostly sunny, with a high near 77. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 40 mph.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 56. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and possibly a thunderstorm before 11am, then showers likely. High near 63. Northwest wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.
Monday
A 30 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 62.
Monday Night
A 10 percent chance of showers before 8pm. Partly cloudy, with a low around 41.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 72.
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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:
7:46 am EDT Apr 17, 2025
Forecast Valid:
8am EDT Apr 17, 2025-6pm EDT Apr 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation