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.

A Few Clouds

81°F

27°C

Humidity 64%
Wind Speed NW 7 mph
Barometer 29.95 in (1013.8 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 17 Aug 2:55 pm EDT
Extended Forecast for

2 Miles SW Somerset IN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. North wind around 10 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Northwest wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 63. Southwest wind around 5 mph.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 76. West wind around 5 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of thunderstorms before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 10%.

    Low: 57 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. North wind around 10 mph.
Tonight
Partly cloudy, with a low around 56. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 63. Southwest wind around 5 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 76. West wind around 5 mph. Chance of precipitation is 30%.
Wednesday Night
A slight chance of thunderstorms before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 10%.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 77.
Friday Night
A 20 percent chance of showers after 2am. Mostly clear, with a low around 59.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Somerset IN
 40.68°N 85.88°W (Elev. 702 ft)
Last Update:
3:31 pm EDT Aug 17, 2026
Forecast Valid:
3pm EDT Aug 17, 2026-6pm EDT Aug 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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