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.

Fair

57°F

14°C

Humidity 52%
Wind Speed S 13 mph
Barometer 30.12 in (1020.2 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 9 Apr 2:55 am EDT
Extended Forecast for

Peru IN

  • Overnight

    Overnight: Partly cloudy, with a low around 53. South wind around 15 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. 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

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers after 4am. Mostly cloudy, with a low around 55. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms. High near 62. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 40. North wind 5 to 10 mph.

    Low: 40 °F

    Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 79.

    High: 79 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 40 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 53. South wind around 15 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers between 11am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 73. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers after 4am. Mostly cloudy, with a low around 55. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday
Showers and thunderstorms. High near 62. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 40. North wind 5 to 10 mph.
Saturday
Sunny, with a high near 64.
Saturday Night
Mostly cloudy, with a low around 54.
Sunday
Mostly cloudy, with a high near 79.
Sunday Night
A 40 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 65.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 50%.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.76°N 86.07°W (Elev. 656 ft)
Last Update:
2:45 am EDT Apr 9, 2026
Forecast Valid:
3am EDT Apr 9, 2026-6pm EDT Apr 15, 2026
 
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