Thunderstorms and Heavy Rain Possible in the Northern and Central Plains and New Mexico; Dangerous Heat Continues

Severe thunderstorms, capable of producing damaging winds and isolated large hail, and heavy rainfall are possible across the northern and central Plains. Monsoonal thunderstorms may produce heavy rainfall and possible flash flooding across New Mexico. Dangerous, long duration heat will continue over much of the central and eastern U.S. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

91°F

33°C

Humidity 49%
Wind Speed W 9 mph
Barometer 30.19 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 29 Jul 10:50 am CDT
Extended Forecast for

Sherman TXSimilar City Names

Heat Advisory July 29, 11:10am until July 29, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 29, 11:10am until July 29, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • Today

    High: 99 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 77. South southeast wind around 5 mph becoming calm  in the evening.

    Low: 77 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 102. Heat index values as high as 109. Calm wind becoming south around 5 mph.

    High: 102 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 76 °F

    Mostly Clear

  • Thursday

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

    High: 102 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74. East northeast wind around 5 mph.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 93. Northeast wind 5 to 10 mph.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 72. Northeast wind 5 to 10 mph.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 102. West southwest wind around 5 mph becoming calm in the afternoon.
Tonight
Clear, with a low around 77. South southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 102. Heat index values as high as 109. Calm wind becoming south around 5 mph.
Wednesday Night
Mostly clear, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 102. Calm wind becoming north northeast around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 74. East northeast wind around 5 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Northeast wind 5 to 10 mph.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 72. Northeast wind 5 to 10 mph.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. East northeast wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 70.
Sunday
Mostly sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny, with a high near 96.
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ABOUT THIS FORECAST

 
Point Forecast:
Sherman TXSimilar City Names
 33.62°N 96.6°W (Elev. 699 ft)
5:24 am CDT Jul 29, 2025
11am CDT Jul 29, 2025-6pm CDT Aug 4, 2025
 
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Additional Resources

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