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

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 >

Hazardous Weather Conditions

Current conditions at

Guymon / Guymon Municipal Airport (KGUY)

Lat: 36.68°NLon: 101.51°WElev: 3123ft.

Fair

84°F

29°C

Humidity 53%
Wind Speed SE 7 mph
Barometer 30.09 in (1014.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 17 Aug 8:53 pm CDT
Extended Forecast for

Guymon OK

  • Tonight

    Tonight: Mostly clear, with a low around 67. South wind around 10 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 103. Southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 103 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. North northwest wind 5 to 10 mph becoming east northeast in the afternoon.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63. Northeast wind 5 to 10 mph.

    Low: 63 °F

    Chance
    T-storms

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Northeast wind 5 to 10 mph becoming east southeast in the afternoon.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. East southeast wind 5 to 10 mph.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 102. South wind around 5 mph.

    High: 102 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. South southeast wind 5 to 10 mph becoming southwest after midnight.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 67. South wind around 10 mph.
Tuesday
Sunny and hot, with a high near 103. Southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 67. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 97. North northwest wind 5 to 10 mph becoming east northeast in the afternoon.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63. Northeast wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 98. Northeast wind 5 to 10 mph becoming east southeast in the afternoon.
Thursday Night
Mostly clear, with a low around 65. East southeast wind 5 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 102. South wind around 5 mph.
Friday Night
Mostly clear, with a low around 68. South southeast wind 5 to 10 mph becoming southwest after midnight.
Saturday
Sunny and hot, with a high near 103.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny and hot, with a high near 105.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Monday
Sunny and hot, with a high near 104.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guymon OK
 36.69°N 101.47°W (Elev. 3097 ft)
Last Update:
8:45 pm CDT Aug 17, 2026
Forecast Valid:
9pm CDT Aug 17, 2026-6pm CDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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