Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Fair

73°F

23°C

Humidity 86%
Wind Speed SW 7 mph
Barometer 30.02 in (1016.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 2 Sep 7:55 am EDT
Extended Forecast for

3 Miles NNW Somerset IN

Heat Advisory September 2, 09:01am until September 2, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 2, 09:01am until September 2, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Today

    High: 93 °F

    Hot

  • Tonight

    Tonight: 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 3pm.  Sunny and hot, with a high near 93. Heat index values as high as 103. Southwest wind around 5 mph.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms after 2am.  Partly cloudy, with a low around 72. Calm wind.  Chance of precipitation is 30%.

    Low: 72 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms before 2pm.  Mostly sunny, with a high near 89. Calm wind becoming northeast around 5 mph.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms after 2am.  Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 2am.  Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 93. Heat index values as high as 103. Southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 74. Southwest wind around 5 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 93. Heat index values as high as 103. Southwest wind around 5 mph.
Thursday Night
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 30%.
Friday
A 40 percent chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 89. Calm wind becoming northeast around 5 mph.
Friday Night
A 50 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 69.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Saturday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 64.
Sunday
A 10 percent chance of showers before 8am. Mostly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 61.
Labor Day
Mostly sunny, with a high near 82.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 62.
Tuesday
A slight chance of showers. Partly sunny, with a high near 83.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Somerset IN
 40.75°N 85.9°W (Elev. 745 ft)
6:30 am EDT Sep 2, 2026
9am EDT Sep 2, 2026-6pm EDT Sep 8, 2026
 
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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