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

Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Overcast

77°F

25°C

Humidity 89%
Wind Speed Vrbl 5 mph
Barometer 30.20 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 2 Aug 9:50 am CDT
Extended Forecast for

Sherman TX

  • Today

    Today: Partly sunny, with a high near 87. Northeast wind around 5 mph.

    High: 87 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 70. East northeast wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 89. Calm wind becoming east around 5 mph in the morning.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. East wind around 5 mph.

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 89. East wind around 5 mph.

    High: 89 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. East northeast wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 73. Southeast wind around 5 mph.

    Low: 73 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97. South wind around 5 mph.

    High: 97 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 87. Northeast wind around 5 mph.
Tonight
Mostly clear, with a low around 70. East northeast wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 89. Calm wind becoming east around 5 mph in the morning.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. East wind around 5 mph.
Monday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 89. East wind around 5 mph.
Monday Night
Mostly clear, with a low around 69. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 93. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 73. Southeast wind around 5 mph.
Wednesday
Sunny, with a high near 97. South wind around 5 mph.
Wednesday Night
Clear, with a low around 75.
Thursday
Sunny, with a high near 98.
Thursday Night
Mostly clear, with a low around 77.
Friday
Sunny and hot, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sherman TX
 33.64°N 96.6°W (Elev. 732 ft)
Last Update:
5:24 am CDT Aug 2, 2025
Forecast Valid:
9am CDT Aug 2, 2025-6pm CDT Aug 8, 2025
 
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