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

Severe Weather and Heavy Rainfall in the Ohio Valley; Heat Continuing in the South and Southeast

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians tonight. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Indianapolis International Airport (KIND)

Lat: 39.73°NLon: 86.28°WElev: 790ft.

Overcast

69°F

21°C

Humidity 90%
Wind Speed S 8 mph
Barometer 29.90 in (1012.1 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 12 Aug 3:54 am EDT
Extended Forecast for

Speedway IN

Flood Watch August 12, 04:38am until August 13, 12:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 12, 04:38am until August 13, 12:00am

    NOW until 12:00am Thu

    Flood Watch

  • Overnight

    Low: 69 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 3pm, then showers likely and possibly a thunderstorm after 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 84. South wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then scattered showers and thunderstorms between 8pm and 11pm, then scattered showers after 11pm. Mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers
    Likely then
    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then scattered showers and thunderstorms after 5pm. Mostly cloudy, with a high near 83. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Scattered
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 71. Southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 71 °F

    Showers

  • Friday

    Friday: Scattered showers and thunderstorms before 8am, then scattered showers between 8am and 2pm. Mostly cloudy, with a high near 85. North wind 3 to 5 mph. Chance of precipitation is 40%.

    High: 85 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: Isolated showers and thunderstorms before 11pm, then isolated showers between 11pm and 2am. Partly cloudy, with a low around 71. East northeast wind around 5 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Isolated
    T-storms then
    Isolated
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. East southeast wind 5 to 7 mph.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 5am, then scattered showers and thunderstorms after 5am. Patchy fog. Otherwise, mostly cloudy, with a steady temperature around 69. Southeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and thunderstorms likely, mainly before 3pm, then showers likely and possibly a thunderstorm after 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 84. South wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then scattered showers and thunderstorms between 8pm and 11pm, then scattered showers after 11pm. Mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Scattered showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then scattered showers and thunderstorms after 5pm. Mostly cloudy, with a high near 83. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 71. Southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Scattered showers and thunderstorms before 8am, then scattered showers between 8am and 2pm. Mostly cloudy, with a high near 85. North wind 3 to 5 mph. Chance of precipitation is 40%.
Friday Night
Isolated showers and thunderstorms before 11pm, then isolated showers between 11pm and 2am. Partly cloudy, with a low around 71. East northeast wind around 5 mph. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. East southeast wind 5 to 7 mph.
Saturday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. South wind around 6 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 90. West wind 6 to 9 mph, with gusts as high as 18 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Monday
A 10 percent chance of showers. Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Speedway IN
 39.79°N 86.24°W (Elev. 735 ft)
Last Update:
4:15 am EDT Aug 12, 2026
Forecast Valid:
4am EDT Aug 12, 2026-6pm EDT Aug 18, 2026
 
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