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 and Breezy

87°F

31°C

Humidity 42%
Wind Speed SW 22 mph
Barometer 29.88 in (1011.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 1 Oct 2:55 pm EDT
Extended Forecast for

2 Miles SW Somerset IN

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 84. Southwest wind around 15 mph, with gusts as high as 20 mph.

    High: 84 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 60. Southwest wind around 5 mph becoming north after midnight. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 60 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers likely, mainly before 10am. Mostly cloudy, with a high near 64. North wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 64 °F

    Showers
    Likely then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44. North wind around 5 mph.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 65. East wind 5 to 10 mph.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 84. Southwest wind around 15 mph, with gusts as high as 20 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 60. Southwest wind around 5 mph becoming north after midnight. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers likely, mainly before 10am. Mostly cloudy, with a high near 64. North wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly clear, with a low around 44. North wind around 5 mph.
Saturday
Sunny, with a high near 65. East wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 69.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 64.
Monday Night
Clear, with a low around 37.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Clear, with a low around 40.
Wednesday
Sunny, with a high near 70.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Somerset IN
 40.68°N 85.91°W (Elev. 748 ft)
Last Update:
3:01 pm EDT Oct 1, 2026
Forecast Valid:
3pm EDT Oct 1, 2026-6pm EDT Oct 7, 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