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

Indianapolis International Airport (KIND)

Lat: 39.73°NLon: 86.28°WElev: 790ft.

A Few Clouds

81°F

27°C

Humidity 69%
Wind Speed S 5 mph
Barometer 30.07 in (1017.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 10 Aug 9:54 pm EDT
Extended Forecast for

Castleton IN

  • Tonight

    Tonight: Mostly clear, with a low around 72. Light south wind.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. South wind around 6 mph becoming calm in the evening.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Southwest wind 3 to 7 mph. Chance of precipitation is 40%.

    High: 90 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Southwest wind around 6 mph becoming calm in the evening.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 88. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 68. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 86. Light north northeast wind.

    High: 86 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67. Light east wind.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 72. Light south wind.
Monday
Mostly sunny and hot, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 72. South wind around 6 mph becoming calm in the evening.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Southwest wind 3 to 7 mph. Chance of precipitation is 40%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 88. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 68. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 86. Light north northeast wind.
Thursday Night
Mostly clear, with a low around 67. Light east wind.
Friday
Sunny, with a high near 88. Light southeast wind.
Friday Night
Mostly clear, with a low around 70.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Saturday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castleton IN
 39.9°N 86.06°W (Elev. 823 ft)
Last Update:
10:22 pm EDT Aug 10, 2025
Forecast Valid:
10pm EDT Aug 10, 2025-6pm EDT Aug 17, 2025
 
Forecast Discussion
 
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Additional Resources

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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