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.

A Few Clouds

77°F

25°C

Humidity 40%
Wind Speed NW 18 mph
Barometer 29.93 in (1013.4 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 19 Jun 2:55 pm EDT
Extended Forecast for

3 Miles NNW Onward IN

  • Juneteenth

    Juneteenth: Sunny, with a high near 76. Northwest wind around 15 mph, with gusts as high as 20 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 2am. Partly cloudy, with a low around 59. Southwest wind around 5 mph.

    Low: 59 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 10 percent chance of showers before 8am. Mostly sunny, with a high near 77. West wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 77 °F

    Slight Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. West wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers, mainly after 2pm. High near 75. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 75 °F

    Slight Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 61. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 61 °F

    Heavy Rain

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely then
    Chance
    Showers

  • Monday Night

    Monday Night: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 54.

    Low: 54 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Juneteenth
Sunny, with a high near 76. Northwest wind around 15 mph, with gusts as high as 20 mph.
Tonight
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 59. Southwest wind around 5 mph.
Saturday
A 10 percent chance of showers before 8am. Mostly sunny, with a high near 77. West wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 58. West wind around 5 mph becoming calm in the evening.
Sunday
Showers, mainly after 2pm. High near 75. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 61. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Monday
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 60%.
Monday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 54.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 75.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Onward IN
 40.72°N 86.22°W (Elev. 696 ft)
Last Update:
3:18 pm EDT Jun 19, 2026
Forecast Valid:
3pm EDT Jun 19, 2026-6pm EDT Jun 25, 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