Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Overcast

33°F

1°C

Humidity 73%
Wind Speed NE 8 mph
Barometer 30.15 in (1021.9 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 3 Mar 4:55 am EST
Extended Forecast for

Peru IN

  • Today

    Today: A 50 percent chance of rain after 8am.  Cloudy, with a high near 46. Calm wind becoming south around 5 mph.

    High: 46 °F

    Chance Rain

  • Tonight

    Tonight: A 40 percent chance of rain.  Mostly cloudy, with a low around 37. Calm wind becoming east around 5 mph.

    Low: 37 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, then rain likely and possibly a thunderstorm after 1pm.  Mostly cloudy, with a high near 52. East wind 5 to 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 52 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm.  Low around 47. Southeast wind around 5 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 47 °F

    Rain Likely
    then Rain

  • Thursday

    Thursday: Rain and possibly a thunderstorm before 1pm, then rain likely between 1pm and 4pm, then rain likely and possibly a thunderstorm after 4pm.  High near 63. Southeast wind 5 to 10 mph becoming southwest in the afternoon.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 63 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain and thunderstorms.  Mostly cloudy, with a low around 49. Chance of precipitation is 40%.

    Low: 49 °F

    Chance Rain

  • Friday

    Friday: A chance of rain, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 71. Chance of precipitation is 50%.

    High: 71 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: Rain, with thunderstorms also possible after 1pm.  High near 68. Chance of precipitation is 80%.

    High: 68 °F

    Rain

Detailed Forecast

Today
A 50 percent chance of rain after 8am. Cloudy, with a high near 46. Calm wind becoming south around 5 mph.
Tonight
A 40 percent chance of rain. Mostly cloudy, with a low around 37. Calm wind becoming east around 5 mph.
Wednesday
A chance of rain, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 52. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain and possibly a thunderstorm. Low around 47. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Rain and possibly a thunderstorm before 1pm, then rain likely between 1pm and 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 63. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Friday
A chance of rain, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Saturday
Rain, with thunderstorms also possible after 1pm. High near 68. Chance of precipitation is 80%.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 47.
Monday
Mostly sunny, with a high near 65.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.76°N 86.07°W (Elev. 656 ft)
5:31 am EST Mar 3, 2026
5am EST Mar 3, 2026-6pm EDT Mar 9, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database