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

72°F

22°C

Humidity 94%
Wind Speed SE 3 mph
Barometer 30.07 in (1017.9 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 15 Aug 5:55 am EDT
Extended Forecast for

Mexico IN

Flood Watch until August 16, 12:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until August 16, 12:00am

    NOW until 12:00am Sun

    Flood Watch

  • Today

    High: 80 °F

    Showers

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. West wind around 5 mph.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 9am, then a chance of showers and thunderstorms after 9am. Mostly cloudy, with a high near 84. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 66. Northwest wind around 5 mph.

    Low: 66 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 78. North wind around 5 mph.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 9am. High near 80. East wind around 5 mph becoming south in the morning. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Tonight
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. West wind around 5 mph.
Sunday
Showers likely and possibly a thunderstorm before 9am, then a chance of showers and thunderstorms after 9am. Mostly cloudy, with a high near 84. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 66. Northwest wind around 5 mph.
Monday
Mostly sunny, with a high near 78. North wind around 5 mph.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 79.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 64.
Wednesday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mexico IN
 40.82°N 86.1°W (Elev. 699 ft)
Last Update:
6:31 am EDT Aug 15, 2026
Forecast Valid:
6am EDT Aug 15, 2026-6pm EDT Aug 21, 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