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.

Overcast

38°F

3°C

Humidity 91%
Wind Speed Calm
Barometer 29.92 in (1014.0 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 15 Feb 6:55 am EST
Extended Forecast for

Peru IN

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 53. Calm wind becoming west around 5 mph in the afternoon.

    High: 53 °F

    Gradual
    Clearing

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 58. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 58 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39. Southwest wind 5 to 10 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 57. South wind 5 to 10 mph.

    High: 57 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 68. Breezy.

    High: 68 °F

    Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain and thunderstorms after 1pm. Mostly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 53. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 34. Calm wind.
Washington's Birthday
Partly sunny, with a high near 58. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 39. Southwest wind 5 to 10 mph.
Tuesday
Mostly cloudy, with a high near 57. South wind 5 to 10 mph.
Tuesday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 51.
Wednesday
A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 68. Breezy.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
A 30 percent chance of rain and thunderstorms after 1pm. Mostly sunny, with a high near 62.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 50.
Friday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 40.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.76°N 86.07°W (Elev. 656 ft)
Last Update:
6:45 am EST Feb 15, 2026
Forecast Valid:
7am EST Feb 15, 2026-6pm EST Feb 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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