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

75°F

24°C

Humidity 83%
Wind Speed SW 7 mph
Barometer 29.97 in (1014.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 3 Sep 4:55 am EDT
Extended Forecast for

5 Miles WNW Somerset IN

Heat Advisory September 3, 06:03am until September 3, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 3, 06:03am until September 3, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Today

    High: 92 °F

    Hot

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph.

    Low: 71 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before 8am. Mostly sunny and hot, with a high near 91. Heat index values as high as 103. South wind around 5 mph becoming northeast in the morning.

    High: 91 °F

    Chance
    T-storms then
    Sunny

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 85. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 92. Heat index values as high as 105. Southwest wind 5 to 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 8am. Mostly sunny and hot, with a high near 91. Heat index values as high as 103. South wind around 5 mph becoming northeast in the morning.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. Calm wind.
Saturday
A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 85. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%.
Saturday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 59.
Labor Day
Sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Somerset IN
 40.73°N 85.96°W (Elev. 676 ft)
Last Update:
3:46 am EDT Sep 3, 2026
Forecast Valid:
6am EDT Sep 3, 2026-6pm EDT Sep 9, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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