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Hazardous Weather Conditions

Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Thunderstorm Light Rain

81°F

27°C

Humidity 90%
Wind Speed S 5 mph
Barometer 29.81 in (1009.1 mb)
Dewpoint 77°F (25°C)
Visibility 7.00 mi
Heat Index88°F (31°C)
Last update 27 Jul 3:55 pm EDT
Extended Forecast for

Grissom Air Force Base / Peru IN

Severe T-storm Watch until July 27, 08:00pm
Severe T-storm Warning until July 27, 05:15pm
Click here for hazard details and duration
Severe T-storm Watch
Severe T-storm Warning
  •  
    Severe T-storm Watch until July 27, 08:00pm
    Severe T-storm Warning until July 27, 05:15pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 87 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before midnight. Some of the storms could be severe. Mostly cloudy, with a low around 70. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Severe
    Thunderstorms

  • Tuesday

    Tuesday: Partly sunny, with a high near 81. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 81 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 81. North wind 5 to 10 mph.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 5pm. Some of the storms could be severe. Mostly sunny, with a high near 87. Heat index values as high as 100. Southwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before midnight. Some of the storms could be severe. Mostly cloudy, with a low around 70. West wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 81. North wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 58. North wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 81. North wind 5 to 10 mph.
Wednesday Night
Clear, with a low around 59.
Thursday
Sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 62.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 65.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Sunday
A slight chance of showers. Mostly sunny, with a high near 82.
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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:
3:45 pm EDT Jul 27, 2026
Forecast Valid:
4pm EDT Jul 27, 2026-6pm EDT Aug 2, 2026
 
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