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

27°F

-3°C

Humidity 74%
Wind Speed Calm
Barometer 29.81 in (1010.4 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 25 Feb 11:55 pm EST
Extended Forecast for

Amboy IN

  • Overnight

    Overnight: Mostly cloudy, with a low around 24. North wind around 5 mph.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 44. East wind around 5 mph becoming west in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. South wind 5 to 10 mph.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 58. Southwest wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. South wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain and snow after 1pm. Partly sunny, with a high near 46. Chance of precipitation is 20%.

    High: 46 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow after 1pm. Mostly cloudy, with a high near 35.

    High: 35 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 24. North wind around 5 mph.
Thursday
Mostly sunny, with a high near 44. East wind around 5 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 30. South wind 5 to 10 mph.
Friday
Sunny, with a high near 58. Southwest wind 10 to 20 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 33. South wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Saturday
A slight chance of rain and snow after 1pm. Partly sunny, with a high near 46. Chance of precipitation is 20%.
Saturday Night
A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 24.
Sunday
A 20 percent chance of snow after 1pm. Mostly cloudy, with a high near 35.
Sunday Night
A 50 percent chance of snow. Cloudy, with a low around 19.
Monday
A 20 percent chance of snow before 1pm. Mostly sunny, with a high near 33.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 20.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 39.
Tuesday Night
A chance of rain and snow. Partly cloudy, with a low around 27.
Wednesday
A slight chance of rain. Sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Amboy IN
 40.62°N 85.94°W (Elev. 797 ft)
Last Update:
10:01 pm EST Feb 25, 2026
Forecast Valid:
12am EST Feb 26, 2026-6pm EST Mar 4, 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