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

49°F

9°C

Humidity 72%
Wind Speed NE 5 mph
Barometer 30.11 in (1019.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 9 Oct 4:55 am EDT
Extended Forecast for

Amboy IN

  • Today

    Today: Increasing clouds, with a high near 77. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 77 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 57. East wind 5 to 10 mph.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 78. Southeast wind 5 to 10 mph.

    High: 78 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 57. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 57 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before 8am. Mostly cloudy, with a high near 70. East wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 2pm. Sunny, with a high near 79.

    High: 79 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Increasing clouds, with a high near 77. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 57. East wind 5 to 10 mph.
Saturday
Partly sunny, with a high near 78. Southeast wind 5 to 10 mph.
Saturday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 57. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 70. East wind 5 to 10 mph. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 54.
Columbus Day
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A 20 percent chance of showers and thunderstorms before 2pm. Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 72.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 75.
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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:
3:45 am EDT Oct 9, 2026
Forecast Valid:
5am EDT Oct 9, 2026-6pm EDT Oct 15, 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