National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Fog/Mist

38°F

3°C

Humidity 93%
Wind Speed E 10 mph
Barometer 30.16 in (1022.2 mb)
Dewpoint 37°F (3°C)
Visibility 1.50 mi
Wind Chill31°F (-1°C)
Last update 4 Mar 7:55 am EST
Extended Forecast for

Amboy IN

  • Today

    Today: A 40 percent chance of showers, mainly after 2pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 49. East wind 5 to 10 mph.

    High: 49 °F

    Chance
    Showers and
    Patchy Fog

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then showers likely between 10pm and 4am, then showers and possibly a thunderstorm after 4am. Patchy fog after 11pm. Low around 47. East wind around 5 mph becoming south after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Showers
    Likely and
    Patchy Fog
    then Showers
    and Patchy
    Fog

  • Thursday

    Thursday: Showers and possibly a thunderstorm. Patchy fog before 10am. High near 62. South wind 5 to 15 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 50. West wind around 5 mph becoming south after midnight.

    Low: 50 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 74. South wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A slight chance of rain, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Slight Chance
    Rain then
    Rain Likely

  • Saturday

    Saturday: Rain and possibly a thunderstorm before 1pm, then a slight chance of rain. High near 66. Breezy. Chance of precipitation is 80%.

    High: 66 °F

    Rain and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers, mainly after 2pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 49. East wind 5 to 10 mph.
Tonight
A chance of showers and thunderstorms before 10pm, then showers likely between 10pm and 4am, then showers and possibly a thunderstorm after 4am. Patchy fog after 11pm. Low around 47. East wind around 5 mph becoming south after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and possibly a thunderstorm. Patchy fog before 10am. High near 62. South wind 5 to 15 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 50. West wind around 5 mph becoming south after midnight.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 74. South wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Friday Night
A slight chance of rain, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain and possibly a thunderstorm before 1pm, then a slight chance of rain. High near 66. Breezy. Chance of precipitation is 80%.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 69.
Monday Night
A 30 percent chance of rain and thunderstorms. Partly cloudy, with a low around 57.
Tuesday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Amboy IN
 40.59°N 85.94°W (Elev. 797 ft)
Last Update:
6:45 am EST Mar 4, 2026
Forecast Valid:
8am EST Mar 4, 2026-6pm EDT Mar 10, 2026
 
Forecast Discussion
 
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Additional Resources

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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