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.

Mostly Cloudy

64°F

18°C

Humidity 58%
Wind Speed SW 15 G 25 mph
Barometer 29.87 in (1011.1 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 13 May 2:54 am EDT
Extended Forecast for

Castleton IN

  • Overnight

    Overnight: Showers likely, mainly before 3am. Mostly cloudy, with a low around 55. West southwest wind around 8 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Increasing clouds, with a high near 66. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.

    High: 66 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 43. North wind 5 to 11 mph, with gusts as high as 22 mph.

    Low: 43 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Sunny, with a high near 68. North northwest wind 6 to 8 mph.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: A 50 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 73. South wind 6 to 13 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 73 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 61. South wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southwest wind 7 to 9 mph.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 65. South wind around 6 mph. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Showers likely, mainly before 3am. Mostly cloudy, with a low around 55. West southwest wind around 8 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Increasing clouds, with a high near 66. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 43. North wind 5 to 11 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 68. North northwest wind 6 to 8 mph.
Thursday Night
Mostly clear, with a low around 47. Calm wind.
Friday
A 50 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 73. South wind 6 to 13 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 61. South wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southwest wind 7 to 9 mph.
Saturday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 65. South wind around 6 mph. Chance of precipitation is 40%.
Sunday
A 10 percent chance of showers before 8am. Mostly sunny, with a high near 88. South southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 69.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Chance of precipitation is 70%.
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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:
2:45 am EDT May 13, 2026
Forecast Valid:
2am EDT May 13, 2026-6pm EDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation