National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Fair

64°F

18°C

Humidity 50%
Wind Speed S 5 mph
Barometer 29.82 in (1009.7 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 18 Oct 12:55 am EDT
Extended Forecast for

Peru IN

  • Overnight

    Overnight: Partly cloudy, with a low around 58. South wind around 10 mph.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers and possibly a thunderstorm, mainly after 2pm. High near 80. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 80 °F

    Mostly Sunny
    then Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then rain and possibly a thunderstorm after 8pm. Low around 55. South wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 55 °F

    Showers

  • Sunday

    Sunday: Rain before 2pm, then a chance of showers after 2pm. High near 61. West wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 61 °F

    Rain

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 8pm. Mostly clear, with a low around 39. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers. Partly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers. Mostly sunny, with a high near 56.

    High: 56 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 58. South wind around 10 mph.
Saturday
Showers and possibly a thunderstorm, mainly after 2pm. High near 80. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then rain and possibly a thunderstorm after 8pm. Low around 55. South wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Sunday
Rain before 2pm, then a chance of showers after 2pm. High near 61. West wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
A 30 percent chance of showers before 8pm. Mostly clear, with a low around 39. West wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 64.
Monday Night
A 40 percent chance of showers. Partly cloudy, with a low around 46.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Mostly sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 60.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 60.
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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:
12:30 am EDT Oct 18, 2025
Forecast Valid:
1am EDT Oct 18, 2025-6pm EDT Oct 24, 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