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.

Fog

71°F

22°C

Humidity 96%
Wind Speed NW 5 mph
Barometer 30.02 in (1016.1 mb)
Dewpoint 70°F (21°C)
Visibility 0.38 mi
Last update 14 Jul 2:55 am EDT
Extended Forecast for

Peru IN

  • Overnight

    Overnight: Areas of fog. Otherwise, mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Areas Fog

  • Monday

    Monday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming northeast around 5 mph.

    High: 86 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 88 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. South wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 60%.

    Low: 72 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 70%.

    High: 87 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 67. Calm wind.
Monday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming northeast around 5 mph.
Monday Night
Mostly clear, with a low around 65. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. South wind around 5 mph becoming calm. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 60%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 86.
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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 Jul 14, 2025
Forecast Valid:
3am EDT Jul 14, 2025-6pm EDT Jul 20, 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