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

40°F

4°C

Humidity 59%
Wind Speed E 9 mph
Barometer 30.25 in (1025.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 2 Mar 7:55 pm EST
Extended Forecast for

Peru IN

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. East wind around 5 mph.

    Low: 32 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Rain likely, mainly after 11am. Cloudy, with a high near 46. Calm wind becoming southeast around 5 mph. Chance of precipitation is 70%.

    High: 46 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 1am. Cloudy, with a low around 38. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 54. East wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 54 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 48. Southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Rain

  • Thursday

    Thursday: Rain, with thunderstorms also possible after 1pm. High near 64. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain

  • Friday

    Friday: A chance of rain, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.

    High: 70 °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 60%.

    Low: 59 °F

    Chance Rain
    then Rain
    Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 32. East wind around 5 mph.
Tuesday
Rain likely, mainly after 11am. Cloudy, with a high near 46. Calm wind becoming southeast around 5 mph. Chance of precipitation is 70%.
Tuesday Night
Rain likely, mainly before 1am. Cloudy, with a low around 38. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 54. East wind 5 to 10 mph. Chance of precipitation is 70%. 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 48. Southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Rain, with thunderstorms also possible after 1pm. High near 64. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 40 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 50.
Friday
A chance of rain, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. 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 60%.
Saturday
Rain and possibly a thunderstorm before 1pm, then a chance of rain. High near 69. Chance of precipitation is 80%.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 46.
Sunday
A 20 percent chance of rain. Partly sunny, with a high near 61.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 48.
Monday
A slight chance of rain. Sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.76°N 86.07°W (Elev. 656 ft)
Last Update:
7:46 pm EST Mar 2, 2026
Forecast Valid:
8pm EST Mar 2, 2026-6pm EDT Mar 9, 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