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

91°F

33°C

Humidity 56%
Wind Speed SW 10 mph
Barometer 29.98 in (1014.6 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 1 Sep 3:55 pm EDT
Extended Forecast for

6 Miles NE Peru IN

Heat Advisory September 1, 04:58pm until September 2, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 1, 04:58pm until September 2, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 73. Southwest wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 93. Heat index values as high as 105. Southwest wind 5 to 10 mph.

    High: 93 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. Southwest wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93. West wind around 5 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly clear, with a low around 72.

    Low: 72 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 8pm, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 69. Chance of precipitation is 40%.

    Low: 69 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 92. Heat index values as high as 102. Southwest wind around 10 mph.
Tonight
Mostly clear, with a low around 73. Southwest wind around 5 mph.
Wednesday
Sunny and hot, with a high near 93. Heat index values as high as 105. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 74. Southwest wind around 5 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93. West wind around 5 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly clear, with a low around 72.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 89.
Friday Night
A slight chance of showers before 8pm, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 69. Chance of precipitation is 40%.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Saturday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 62.
Labor Day
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NE Peru IN
 40.82°N 85.98°W (Elev. 797 ft)
Last Update:
3:46 pm EDT Sep 1, 2026
Forecast Valid:
4pm EDT Sep 1, 2026-6pm EDT Sep 7, 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