Moke Impacts Hawaii; Severe Thunderstorms and Heavy Rainfall from the Great Basin to the Plains

Heavy rain from Tropical Storm Moke will begin to impact the Big Island today, risking life-threatening flooding and mudslides in windward and southeast areas. Severe thunderstorms are expected across the northern Rockies/Plains and northern Great Basin. Repeated storms and heavy rainfall may cause flash flooding from the Plains into the Lower MS Valley. Dangerous heat persists across the South. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

106°F

41°C

Humidity 22%
Wind Speed SW 6 mph
Barometer 29.89 in
Dewpoint 59°F (15°C)
Visibility 9.00 mi
Heat Index107°F (42°C)
Last update 23 Aug 5:50 pm CDT
Extended Forecast for

6 Miles SW Hendrix OK

Extreme Heat Warning until August 24, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until August 24, 09:00pm

    NOW until 9:00pm Mon

    Extreme Heat Warning

  • Tonight

    Low: 82 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny and hot, with a high near 109. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 109 °F

    Hot

  • Monday Night

    Monday Night: A 10 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 82. South southwest wind around 10 mph.

    Low: 82 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: Sunny and hot, with a high near 108. Heat index values as high as 111. Southwest wind around 10 mph.

    High: 108 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 80. South wind around 5 mph.

    Low: 80 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm.  Mostly sunny and hot, with a high near 102. West wind around 5 mph.  Chance of precipitation is 20%.

    High: 102 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 77. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 102. Calm wind becoming northeast around 5 mph in the morning.

    High: 102 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 82. South southeast wind around 5 mph.
Monday
Mostly sunny and hot, with a high near 109. Southwest wind around 10 mph, with gusts as high as 20 mph.
Monday Night
A 10 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 82. South southwest wind around 10 mph.
Tuesday
Sunny and hot, with a high near 108. Heat index values as high as 111. Southwest wind around 10 mph.
Tuesday Night
Partly cloudy, with a low around 80. South wind around 5 mph.
Wednesday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny and hot, with a high near 102. West wind around 5 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 77. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 102. Calm wind becoming northeast around 5 mph in the morning.
Thursday Night
Partly cloudy, with a low around 75. East northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny and hot, with a high near 102.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny and hot, with a high near 102.
Saturday Night
Mostly clear, with a low around 78.
Sunday
Sunny and hot, with a high near 102.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SW Hendrix OK
 33.71°N 96.47°W (Elev. 568 ft)
2:52 pm CDT Aug 23, 2026
6pm CDT Aug 23, 2026-6pm CDT Aug 30, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database