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

52°F

11°C

Humidity 67%
Wind Speed SW 16 mph
Barometer 29.87 in (1011.9 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 9 Mar 9:55 am EDT
Extended Forecast for

Onward IN

  • This Afternoon

    This Afternoon: Sunny, with a high near 69. Southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 58. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 58 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 73. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 73 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 56. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 56 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 64. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    High: 64 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain showers likely, possibly mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 30. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain/Snow
    Likely then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of rain and snow after 2am. Mostly cloudy, with a low around 37. Breezy. Chance of precipitation is 40%.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain/Snow and
    Breezy

  • Friday

    Friday: A chance of rain and snow before 8am, then a slight chance of rain between 8am and 2pm. Partly sunny, with a high near 53. Windy. Chance of precipitation is 30%.

    High: 53 °F

    Windy. Chance
    Rain/Snow
    then Slight
    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 69. Southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
A slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 58. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 73. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 56. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers and possibly a thunderstorm. High near 64. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Wednesday Night
Rain showers likely, possibly mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 30. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
Sunny, with a high near 45.
Thursday Night
A chance of rain and snow after 2am. Mostly cloudy, with a low around 37. Breezy. Chance of precipitation is 40%.
Friday
A chance of rain and snow before 8am, then a slight chance of rain between 8am and 2pm. Partly sunny, with a high near 53. Windy. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
A slight chance of rain and snow. Mostly cloudy, with a high near 48. Chance of precipitation is 20%.
Saturday Night
A 40 percent chance of rain. Cloudy, with a low around 39.
Sunday
Rain likely. Cloudy, with a high near 58. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Onward IN
 40.7°N 86.19°W (Elev. 761 ft)
Last Update:
7:15 am EDT Mar 9, 2026
Forecast Valid:
12pm EDT Mar 9, 2026-6pm EDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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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