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

55°F

13°C

Humidity 28%
Wind Speed SE 5 mph
Barometer 30.25 in (1024.7 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 20 Apr 7:54 pm EDT
Extended Forecast for

Castleton IN

  • Tonight

    Tonight: Mostly clear, with a low around 44. Calm wind becoming south around 6 mph after midnight.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 9 to 18 mph, with gusts as high as 28 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southwest wind 10 to 13 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 76. West southwest wind around 9 mph.

    High: 76 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. South wind 3 to 6 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80. South southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62. South wind around 8 mph.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 78. South southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 78 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 56. West southwest wind 6 to 8 mph. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 44. Calm wind becoming south around 6 mph after midnight.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 9 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southwest wind 10 to 13 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 76. West southwest wind around 9 mph.
Wednesday Night
Mostly clear, with a low around 57. South wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 80. South southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 62. South wind around 8 mph.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 78. South southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 56. West southwest wind 6 to 8 mph. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 74. North wind 6 to 9 mph.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 52.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 73.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 53.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castleton IN
 39.92°N 86.06°W (Elev. 801 ft)
Last Update:
7:45 pm EDT Apr 20, 2026
Forecast Valid:
8pm EDT Apr 20, 2026-6pm EDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation