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

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

73°F

23°C

Humidity 100%
Wind Speed SE 6 mph
Barometer 30.06 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 24 Jun 7:50 am CDT
Extended Forecast for

Dorchester TX

  • Today

    Today: Mostly sunny, with a high near 92. Heat index values as high as 102. South wind around 10 mph.

    High: 92 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 76. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 76 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 92. South wind around 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 94. South wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. South wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 96. South wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 96 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 92. Heat index values as high as 102. South wind around 10 mph.
Tonight
Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Increasing clouds, with a low around 76. South wind around 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 92. South wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 77. South wind around 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 94. South wind 15 to 20 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 77. South wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 96. South wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 78.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Sunny, with a high near 97.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dorchester TX
 33.55°N 96.71°W (Elev. 850 ft)
Last Update:
6:06 am CDT Jun 24, 2026
Forecast Valid:
8am CDT Jun 24, 2026-6pm CDT Jun 30, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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