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

46°F

8°C

Humidity 52%
Wind Speed S 12 mph
Barometer 30.30 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 12 Jan 11:55 pm CST
Extended Forecast for

Grayson County Airport TX

  • Overnight

    Overnight: Mostly clear, with a low around 38. South southwest wind around 10 mph.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. Southwest wind 10 to 15 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 45. South southwest wind 10 to 15 mph becoming north northwest after midnight.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 57. North wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 57 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 28. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 53. North northwest wind 5 to 10 mph becoming south in the afternoon.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. South wind 5 to 10 mph becoming west after midnight.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58. North wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. North northwest wind 5 to 10 mph.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 38. South southwest wind around 10 mph.
Tuesday
Sunny, with a high near 67. Southwest wind 10 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 45. South southwest wind 10 to 15 mph becoming north northwest after midnight.
Wednesday
Mostly sunny, with a high near 57. North wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 28. North wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 53. North northwest wind 5 to 10 mph becoming south in the afternoon.
Thursday Night
Mostly clear, with a low around 37. South wind 5 to 10 mph becoming west after midnight.
Friday
Sunny, with a high near 58. North wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 31. North northwest wind 5 to 10 mph.
Saturday
Sunny, with a high near 53.
Saturday Night
Clear, with a low around 30.
Sunday
Sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 29.
M.L.King Day
Sunny, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grayson County Airport TX
 33.71°N 96.66°W (Elev. 797 ft)
Last Update:
11:21 pm CST Jan 12, 2026
Forecast Valid:
12am CST Jan 13, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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