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

Severe Weather Across the Center of the Nation; Fire Weather Concerns for Southwest and California; Snow for the Central Rockies

Severe thunderstorms will continue to impact the center of the Nation through today. Very large hail, strong tornadoes, and damaging winds are expected from the Great Lakes into the central/southern Plains; Flash flooding is possible for portions into the mid-Mississippi Valley. Critical fire weather conditions for the Southwest and central valley of California today. Winter hangs on for Rockies. Read More >

Hazardous Weather Conditions

Current conditions at

Stillwater, Stillwater Regional Airport (KSWO)

Lat: 36.16°NLon: 97.09°WElev: 984ft.

Mostly Cloudy and Windy

90°F

32°C

Humidity 48%
Wind Speed S 30 G 47 mph
Barometer 29.71 in (1004.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 18 May 3:53 pm CDT
Extended Forecast for

Stillwater Regional Airport OK

Wind Advisory May 18, 04:11pm until May 18, 10:00pm
Click here for hazard details and duration
...
  •  
    Wind Advisory May 18, 04:11pm until May 18, 10:00pm

    NOW until 10:00pm Mon

    Wind Advisory

  • Tonight

    Low: 60 °F

    Severe
    Thunderstorms
    and Windy
    then T-storms

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 10am. High near 70. North wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    T-storms then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 53. Northeast wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Cloudy through mid morning, then becoming mostly sunny, with a high near 71. Northeast wind around 11 mph.

    High: 71 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 56. East northeast wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 56 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 73. Chance of precipitation is 80%.

    High: 73 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Some of the storms could be severe. Low around 60. Windy, with a south wind 21 to 26 mph becoming west southwest 15 to 20 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 10am. High near 70. North wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 53. Northeast wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Cloudy through mid morning, then becoming mostly sunny, with a high near 71. Northeast wind around 11 mph.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 56. East northeast wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Thursday
Showers and possibly a thunderstorm. High near 73. Chance of precipitation is 80%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 59. Chance of precipitation is 70%.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 80.
Friday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 20%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Memorial Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Stillwater Regional Airport OK
 36.15°N 97.09°W
Last Update:
1:26 pm CDT May 18, 2026
Forecast Valid:
4pm CDT May 18, 2026-6pm CDT May 25, 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