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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

A Few Clouds

69°F

21°C

Humidity 44%
Wind Speed SE 8 mph
Barometer 30.10 in (1019.4 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 10 Oct 6:55 pm EDT
Extended Forecast for

Peru IN

  • Tonight

    Tonight: A 20 percent chance of showers between 4am and 5am. Cloudy, with a low around 58. East wind 5 to 10 mph.

    Low: 58 °F

    Cloudy then
    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers between 8am and 10am. Mostly cloudy, with a high near 74. East wind around 5 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 86. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. Southwest wind around 10 mph.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers before 2pm. Sunny, with a high near 87.

    High: 87 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 2am. Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 75. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers between 4am and 5am. Cloudy, with a low around 58. East wind 5 to 10 mph.
Sunday
A slight chance of showers between 8am and 10am. Mostly cloudy, with a high near 74. East wind around 5 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 55. Calm wind.
Columbus Day
Mostly sunny, with a high near 86. Light south wind becoming southwest 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 68. Southwest wind around 10 mph.
Tuesday
A 20 percent chance of showers before 2pm. Sunny, with a high near 87.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 2am. Mostly clear, with a low around 60.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 75. Chance of precipitation is 40%.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 56.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 71.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 52.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 65.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 41.
Saturday
A slight chance of showers. Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Peru IN
 40.76°N 86.07°W (Elev. 656 ft)
Last Update:
7:00 pm EDT Oct 10, 2026
Forecast Valid:
8pm EDT Oct 10, 2026-6pm EDT Oct 17, 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