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

35°F

2°C

Humidity 81%
Wind Speed Calm
Barometer 29.96 in (1015.4 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 25 Mar 8:55 am EDT
Extended Forecast for

Peru IN

  • Today

    Today: Mostly cloudy, with a high near 51. Northwest wind 5 to 10 mph.

    High: 51 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 30. Northwest wind around 5 mph becoming calm after midnight.

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50. Light west wind becoming northwest 5 to 10 mph in the morning.

    High: 50 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. North wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain after 2pm. Mostly sunny, with a high near 59. Southwest wind 5 to 10 mph.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: Rain likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Rain Likely

  • Friday Night

    Friday Night: A slight chance of rain and thunderstorms, then a chance of rain after 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.

    Low: 57 °F

    Slight Chance
    T-storms then
    Chance Rain

  • Saturday

    Saturday: Rain likely, mainly after 8am. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.

    High: 69 °F

    Rain Likely

Detailed Forecast

Today
Mostly cloudy, with a high near 51. Northwest wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 30. Northwest wind around 5 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 50. Light west wind becoming northwest 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 32. North wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of rain after 2pm. Mostly sunny, with a high near 59. Southwest wind 5 to 10 mph.
Thursday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 60%.
Friday Night
A slight chance of rain and thunderstorms, then a chance of rain after 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Saturday
Rain likely, mainly after 8am. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Saturday Night
Rain. Low around 56. Chance of precipitation is 80%.
Sunday
Rain and possibly a thunderstorm. High near 66. Chance of precipitation is 80%.
Sunday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 37.
Monday
A chance of rain. Partly sunny, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.76°N 86.07°W (Elev. 656 ft)
Last Update:
8:02 am EDT Mar 25, 2025
Forecast Valid:
9am EDT Mar 25, 2025-6pm EDT Mar 31, 2025
 
Forecast Discussion
 
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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