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

69°F

21°C

Humidity 89%
Wind Speed NE 16 mph
Barometer 29.68 in (1004.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 2 Aug 1:55 am EDT
Extended Forecast for

Walton IN

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 66. Northeast wind around 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 11am, then a chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 78. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of thunderstorms before 8pm. Partly cloudy, with a low around 60. North wind 5 to 10 mph. Chance of precipitation is 10%.

    Low: 60 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79. Northeast wind around 5 mph.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. Northeast wind around 5 mph becoming calm.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 66. Northeast wind around 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and possibly a thunderstorm before 11am, then a chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 78. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A slight chance of thunderstorms before 8pm. Partly cloudy, with a low around 60. North wind 5 to 10 mph. Chance of precipitation is 10%.
Monday
Sunny, with a high near 79. Northeast wind around 5 mph.
Monday Night
Mostly clear, with a low around 58. Northeast wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 82.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 64.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 8am. Partly sunny, with a high near 80.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Walton IN
 40.65°N 86.26°W (Elev. 768 ft)
Last Update:
1:30 am EDT Aug 2, 2026
Forecast Valid:
2am EDT Aug 2, 2026-6pm EDT Aug 8, 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