National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Partly Cloudy

79°F

26°C

Humidity 76%
Wind Speed Calm
Barometer 30.02 in (1016.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 30 Aug 7:55 pm EDT
Extended Forecast for

5 Miles WNW Somerset IN

  • Tonight

    Tonight: Isolated showers before 11pm. Mostly cloudy, with a low around 70. South wind around 5 mph. Chance of precipitation is 20%.

    Low: 70 °F

    Isolated
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 89. Heat index values as high as 97. Southwest wind 5 to 10 mph.

    High: 89 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73. Southwest wind around 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 92. Heat index values as high as 103. Southwest wind 5 to 10 mph.

    High: 92 °F

    Hot

  • Tuesday Night

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

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 94.

    High: 94 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.

    High: 91 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 70.

    Low: 70 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers before 11pm. Mostly cloudy, with a low around 70. South wind around 5 mph. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 89. Heat index values as high as 97. Southwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 73. Southwest wind around 5 mph.
Tuesday
Sunny and hot, with a high near 92. Heat index values as high as 103. Southwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 74. Southwest wind around 5 mph.
Wednesday
Sunny and hot, with a high near 94.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 70.
Friday
A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 87.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Mostly sunny, with a high near 82.
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:
7:15 pm EDT Aug 30, 2026
Forecast Valid:
8pm EDT Aug 30, 2026-6pm EDT Sep 6, 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