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.

Fair

79°F

26°C

Humidity 29%
Wind Speed W 20 G 30 mph
Barometer 29.70 in (1005.7 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 20 Mar 4:55 pm EDT
Extended Forecast for

5 Miles WNW Somerset IN

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. East wind around 5 mph becoming south in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56. Southwest wind 5 to 10 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 76. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 35. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 40. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 69. East wind around 5 mph becoming south in the afternoon.
Saturday Night
Mostly clear, with a low around 56. Southwest wind 5 to 10 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 76. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 35. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 54.
Wednesday Night
Mostly cloudy, with a low around 42.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 71.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 34.
Friday
A slight chance of rain and snow showers. Partly sunny, with a high near 45.
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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:
3:00 pm EDT Mar 20, 2026
Forecast Valid:
5pm EDT Mar 20, 2026-6pm EDT Mar 27, 2026
 
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Additional Resources

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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