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

38°F

3°C

Humidity 53%
Wind Speed Calm
Barometer 30.48 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 12 Jan 1:55 am CST
Extended Forecast for

Dorchester TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 34. South southeast wind around 5 mph.

    Low: 34 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 62. South southwest wind around 5 mph.

    High: 62 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38. South wind around 5 mph.

    Low: 38 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 65. Southwest wind 5 to 10 mph.

    High: 65 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43. South southwest wind around 10 mph becoming northwest after midnight.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. North wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 27. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 51. North northwest wind around 5 mph becoming south in the afternoon.

    High: 51 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. South wind 5 to 10 mph becoming east northeast after midnight.

    Low: 34 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 34. South southeast wind around 5 mph.
Monday
Partly sunny, with a high near 62. South southwest wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 38. South wind around 5 mph.
Tuesday
Partly sunny, with a high near 65. Southwest wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 43. South southwest wind around 10 mph becoming northwest after midnight.
Wednesday
Mostly sunny, with a high near 58. North wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 27. North wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 51. North northwest wind around 5 mph becoming south in the afternoon.
Thursday Night
Mostly clear, with a low around 34. South wind 5 to 10 mph becoming east northeast after midnight.
Friday
Mostly sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 52.
Saturday Night
Clear, with a low around 30.
Sunday
Sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dorchester TX
 33.53°N 96.71°W (Elev. 823 ft)
Last Update:
11:21 pm CST Jan 11, 2026
Forecast Valid:
2am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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