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

44°F

7°C

Humidity 86%
Wind Speed SW 8 mph
Barometer 29.98 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 14 Jan 12:15 am CST
Extended Forecast for

Grayson County Airport TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 44. West southwest wind 10 to 15 mph becoming north northwest. Winds could gust as high as 20 mph.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny through mid morning, then becoming sunny, with a high near 56. Breezy, with a north wind 15 to 25 mph, with gusts as high as 30 mph.

    High: 56 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 29. North northeast wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 55. Light and variable wind becoming south southwest 5 to 10 mph in the morning.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39. South wind around 10 mph becoming west northwest after midnight.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 57 °F

    Sunny

  • Friday Night

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

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 50. North northwest wind 5 to 10 mph.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. West northwest wind 5 to 10 mph.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. West southwest wind 10 to 15 mph becoming north northwest. Winds could gust as high as 20 mph.
Wednesday
Partly sunny through mid morning, then becoming sunny, with a high near 56. Breezy, with a north wind 15 to 25 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 29. North northeast wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Thursday
Sunny, with a high near 55. Light and variable wind becoming south southwest 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 39. South wind around 10 mph becoming west northwest after midnight.
Friday
Sunny, with a high near 57. North wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 31. Northwest wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 50. North northwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 26. West northwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 32.
M.L.King Day
Sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Sunny, with a high near 53.
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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 13, 2026
Forecast Valid:
12am CST Jan 14, 2026-6pm CST Jan 20, 2026
 
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