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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Hazardous Weather Conditions

Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Fair

56°F

13°C

Humidity 92%
Wind Speed SE 5 mph
Barometer 29.96 in (1014.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 11 Oct 11:55 pm EDT
Extended Forecast for

Peru IN

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Patchy Fog

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 86. Southwest wind 5 to 10 mph.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 64. West wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 11am, then showers likely after 11am. Mostly cloudy, with a high near 77. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 77 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 55. Calm wind.
Columbus Day
Mostly sunny, with a high near 86. Southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 69. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 89. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 64. West wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 11am, then showers likely after 11am. Mostly cloudy, with a high near 77. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
A 30 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 56.
Thursday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Thursday Night
Showers likely, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Friday
A chance of showers and thunderstorms before 8am, then a slight chance of showers. Mostly cloudy, with a high near 62. Breezy. Chance of precipitation is 30%.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 61.
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:
11:45 pm EDT Oct 11, 2026
Forecast Valid:
12am EDT Oct 12, 2026-6pm EDT Oct 18, 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