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.

Mostly Cloudy

23°C

74°F

Humidity 88%
Wind Speed S 9 km/h
Barometer 1013.4 mb (29.94 in)
Dewpoint 22°C (71°F)
Visibility 16 km
Last update 12 Jul 9:55 pm EDT
Extended Forecast for

Grissom Air Force Base / Peru IN

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. West wind around 10 km/h.

    Low: 20 °C

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 29. West wind 10 to 15 km/h.

    High: 29 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19. West wind 5 to 10 km/h becoming southwest after midnight.

    Low: 19 °C

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 31. Southwest wind 5 to 10 km/h.

    High: 31 °C

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 21. Calm wind.

    Low: 21 °C

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 32. Chance of precipitation is 30%.

    High: 32 °C

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 22.

    Low: 22 °C

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 31. Chance of precipitation is 70%.

    High: 31 °C

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 22. Chance of precipitation is 60%.

    Low: 22 °C

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 20. West wind around 10 km/h.
Sunday
Mostly sunny, with a high near 29. West wind 10 to 15 km/h.
Sunday Night
Partly cloudy, with a low around 19. West wind 5 to 10 km/h becoming southwest after midnight.
Monday
Sunny, with a high near 31. Southwest wind 5 to 10 km/h.
Monday Night
Mostly clear, with a low around 21. Calm wind.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 32. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 22.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 31. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 22. Chance of precipitation is 60%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 30. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 28.
Friday Night
A chance of showers. Partly cloudy, with a low around 18.
Saturday
A slight chance of showers. Mostly sunny, with a high near 29.
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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:
10:17 pm EDT Jul 12, 2025
Forecast Valid:
10pm EDT Jul 12, 2025-6pm EDT Jul 19, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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