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.

Mostly Cloudy

59°F

15°C

Humidity 46%
Wind Speed N 5 mph
Barometer 30.06 in (1018.2 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 29 Mar 11:55 pm EDT
Extended Forecast for

2 Miles SW Somerset IN

  • Overnight

    Overnight: Mostly cloudy, with a low around 53. Southwest wind around 10 mph.

    Low: 53 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 5pm. Partly sunny, with a high near 73. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 73 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 10 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 63. Southwest wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 79. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 79 °F

    Partly Sunny
    then Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 48. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 48 °F

    Showers

  • Wednesday

    Wednesday: Showers likely. Cloudy, with a high near 55. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 55 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 44. Chance of precipitation is 90%.

    Low: 44 °F

    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 74. Chance of precipitation is 70%.

    High: 74 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 57. Chance of precipitation is 90%.

    Low: 57 °F

    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 53. Southwest wind around 10 mph.
Monday
A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 5pm. Partly sunny, with a high near 73. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Monday Night
A 10 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 63. Southwest wind 15 to 20 mph, with gusts as high as 25 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 79. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 35 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 48. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Wednesday
Showers likely. Cloudy, with a high near 55. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm. Low around 44. Chance of precipitation is 90%.
Thursday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 74. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm. Low around 57. Chance of precipitation is 90%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42.
Sunday
A chance of showers. Partly sunny, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Somerset IN
 40.68°N 85.91°W (Elev. 748 ft)
Last Update:
1:15 am EDT Mar 30, 2026
Forecast Valid:
2am EDT Mar 30, 2026-6pm EDT Apr 5, 2026
 
Forecast Discussion
 
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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