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Hazardous Weather Conditions

Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Thunderstorm Heavy Rain

73°F

23°C

Humidity 94%
Wind Speed E 9 mph
Barometer 29.96 in (1014.1 mb)
Dewpoint 71°F (22°C)
Visibility 3.00 mi
Last update 14 Aug 12:55 am EDT
Extended Forecast for

Peru IN

Flood Watch August 14, 01:21am until August 14, 11:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 14, 01:21am until August 14, 11:00am

    NOW until 11:00am Fri

    Flood Watch

  • Overnight

    Low: 67 °F

    Showers

  • Friday

    Friday: Showers and thunderstorms, mainly before noon. High near 84. East wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm.

    Low: 68 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Southeast wind around 5 mph becoming southwest in the morning.

    High: 86 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind around 5 mph.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 67. East wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers and thunderstorms, mainly before noon. High near 84. East wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 68. Northeast wind around 5 mph becoming calm.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Southeast wind around 5 mph becoming southwest in the morning.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind around 5 mph.
Sunday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.75°N 86.04°W (Elev. 646 ft)
Last Update:
1:16 am EDT Aug 14, 2026
Forecast Valid:
1am EDT Aug 14, 2026-6pm EDT Aug 20, 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