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

54°F

12°C

Humidity 71%
Wind Speed SW 15 mph
Barometer 29.92 in (1013.4 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 5 Nov 2:55 am EST
Extended Forecast for

3 Miles NNW Onward IN

  • Overnight

    Overnight: Mostly clear, with a low around 46. Southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65. Southwest wind 15 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 65 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming west after midnight.

    Low: 31 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 58. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 58 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 45. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 65. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.

    Low: 33 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 46. Southwest wind around 15 mph, with gusts as high as 30 mph.
Wednesday
Mostly sunny, with a high near 65. Southwest wind 15 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming west after midnight.
Thursday
Sunny, with a high near 58. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 45. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Showers and possibly a thunderstorm. High near 65. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Partly cloudy, with a low around 39.
Saturday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 54.
Saturday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Sunday
A chance of rain showers before 1pm, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
Sunday Night
A 20 percent chance of snow showers. Partly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 21.
Veterans Day
Mostly sunny, with a high near 42.
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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:
3:30 am EST Nov 5, 2025
Forecast Valid:
3am EST Nov 5, 2025-6pm EST Nov 11, 2025
 
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