Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Stillwater, Stillwater Regional Airport (KSWO)

Lat: 36.16°NLon: 97.09°WElev: 984ft.

Fair

80°F

27°C

Humidity 74%
Wind Speed NE 7 mph
Barometer 30.04 in (1015.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 17 Aug 8:53 pm CDT
Extended Forecast for

Stillwater OK

Extreme Heat Warning August 18, 11:00am until August 18, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Tonight

    Tonight: Partly cloudy, with a low around 73. Light and variable wind.

    Low: 73 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 107. Heat index values as high as 110. Light and variable wind becoming southwest 5 to 10 mph in the morning.

    High: 107 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 80. South wind 7 to 10 mph.

    Low: 80 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 107. Southwest wind around 9 mph.

    High: 107 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 73. North northeast wind 6 to 9 mph.

    Low: 73 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 99.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 101.

    High: 101 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 73. Light and variable wind.
Tuesday
Sunny and hot, with a high near 107. Heat index values as high as 110. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Tuesday Night
Clear, with a low around 80. South wind 7 to 10 mph.
Wednesday
Sunny and hot, with a high near 107. Southwest wind around 9 mph.
Wednesday Night
Partly cloudy, with a low around 73. North northeast wind 6 to 9 mph.
Thursday
Mostly sunny and hot, with a high near 99.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny and hot, with a high near 101.
Friday Night
Mostly clear, with a low around 73.
Saturday
Mostly sunny and hot, with a high near 102.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Mostly sunny and hot, with a high near 103.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 76.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 106.
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ABOUT THIS FORECAST

 
Point Forecast:
Stillwater OK
 36.11°N 97.06°W
8:32 pm CDT Aug 17, 2026
9pm CDT Aug 17, 2026-6pm CDT Aug 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database