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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Stillwater, Stillwater Regional Airport (KSWO)

Lat: 36.16°NLon: 97.09°WElev: 984ft.

Mostly Cloudy

79°F

26°C

Humidity 72%
Wind Speed S 12 mph
Barometer 30.01 in (1014.9 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 20 Jun 11:53 am CDT
Extended Forecast for

Stillwater OK

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 90. South southeast wind 5 to 8 mph.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 74. South wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Cloudy through mid morning, then gradual clearing and hot, with a high near 98. Heat index values as high as 109. South southwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 98 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 69. South southwest wind 5 to 13 mph becoming east northeast after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    Low: 69 °F

    Showers

  • Monday

    Monday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Northeast wind 6 to 9 mph. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

    High: 85 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 90. South southeast wind 5 to 8 mph.
Tonight
Increasing clouds, with a low around 74. South wind 9 to 13 mph, with gusts as high as 20 mph.
Sunday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Cloudy through mid morning, then gradual clearing and hot, with a high near 98. Heat index values as high as 109. South southwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 69. South southwest wind 5 to 13 mph becoming east northeast after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Monday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Northeast wind 6 to 9 mph. Chance of precipitation is 40%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Tuesday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Thursday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Stillwater OK
 36.11°N 97.06°W
Last Update:
1:27 am CDT Jun 20, 2026
Forecast Valid:
12pm CDT Jun 20, 2026-6pm CDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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