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

Hazardous Weather Conditions

Current conditions at

Indianapolis International Airport (KIND)

Lat: 39.73°NLon: 86.28°WElev: 790ft.

Patches Fog

75°F

24°C

Humidity 94%
Wind Speed NW 3 mph
Barometer 30.11 in (1018.7 mb)
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Last update 29 Jul 6:54 am EDT
Extended Forecast for

Castleton IN

Heat Advisory July 29, 07:34am until July 29, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 29, 07:34am until July 29, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • Today

    High: 92 °F

    Areas Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 73. Light north northeast wind.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 91 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 69. East northeast wind around 6 mph.

    Low: 69 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Northeast wind 7 to 10 mph.

    High: 77 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62. Northeast wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 78. Northeast wind around 11 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. Northeast wind 6 to 10 mph.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Today
Areas of fog before 9am. Otherwise, sunny and hot, with a high near 92. Heat index values as high as 101. Calm wind becoming northeast around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 73. Light north northeast wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91. Calm wind becoming northeast around 5 mph in the afternoon.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 69. East northeast wind around 6 mph.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Northeast wind 7 to 10 mph.
Thursday Night
Partly cloudy, with a low around 62. Northeast wind 8 to 10 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 78. Northeast wind around 11 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 58. Northeast wind 6 to 10 mph.
Saturday
Sunny, with a high near 79. East northeast wind 7 to 9 mph.
Saturday Night
Mostly clear, with a low around 59. East northeast wind around 7 mph.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 64.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castleton IN
 39.9°N 86.06°W (Elev. 823 ft)
Last Update:
7:15 am EDT Jul 29, 2025
Forecast Valid:
7am EDT Jul 29, 2025-6pm EDT Aug 4, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation