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

67°F

19°C

Humidity 87%
Wind Speed S 8 mph
Barometer 29.98 in (1015.0 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 17 May 7:55 am EDT
Extended Forecast for

Mexico IN

  • Today

    Today: Mostly sunny, with a high near 85. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms between 1pm and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 85. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 85 °F

    Sunny then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 11pm, then a chance of showers. Mostly cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then showers and possibly a thunderstorm after 2pm. High near 83. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Slight Chance
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 57. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 66.

    High: 66 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 85. South wind 5 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 67. South wind around 10 mph, with gusts as high as 20 mph.
Monday
A chance of showers and thunderstorms between 1pm and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 85. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Monday Night
Showers and thunderstorms likely before 11pm, then a chance of showers. Mostly cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A slight chance of showers, then showers and possibly a thunderstorm after 2pm. High near 83. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 57. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Partly sunny, with a high near 72.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 56.
Saturday
A chance of showers. Mostly cloudy, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mexico IN
 40.82°N 86.1°W (Elev. 699 ft)
Last Update:
5:45 am EDT May 17, 2026
Forecast Valid:
8am EDT May 17, 2026-6pm EDT May 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation