Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Partly Cloudy

75°F

24°C

Humidity 69%
Wind Speed SW 17 mph
Barometer 29.90 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 28 Dec 10:50 am CST
Extended Forecast for

Grayson County Airport TX

Wind Advisory December 28, 12:00pm until December 29, 03:00am
Click here for hazard details and duration
Wind Advisory
  • Today

    Today: Mostly sunny, with a temperature falling to around 54 by 5pm. Breezy, with a west southwest wind 20 to 25 mph becoming north in the afternoon. Winds could gust as high as 45 mph.

    High: 77 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 32. Windy, with a north wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 45 mph.

    Low: 32 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

  • Monday

    Monday: Increasing clouds, with a high near 43. North wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 43 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. North wind 5 to 10 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 48. North wind around 5 mph becoming southwest in the afternoon.

    High: 48 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 35. South southwest wind around 5 mph.

    Low: 35 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers before noon.  Mostly sunny, with a high near 57. West southwest wind around 5 mph.

    High: 57 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 37. South southwest wind around 5 mph.

    Low: 37 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 61. Southwest wind around 5 mph.

    High: 61 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a temperature falling to around 54 by 5pm. Breezy, with a west southwest wind 20 to 25 mph becoming north in the afternoon. Winds could gust as high as 45 mph.
Tonight
Mostly clear, with a low around 32. Windy, with a north wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 45 mph.
Monday
Increasing clouds, with a high near 43. North wind 15 to 20 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 26. North wind 5 to 10 mph.
Tuesday
Sunny, with a high near 48. North wind around 5 mph becoming southwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 35. South southwest wind around 5 mph.
Wednesday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 57. West southwest wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 37. South southwest wind around 5 mph.
New Year's Day
Mostly sunny, with a high near 61. Southwest wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
Grayson County Airport TX
 33.71°N 96.66°W (Elev. 797 ft)
5:06 am CST Dec 28, 2025
11am CST Dec 28, 2025-6pm CST Jan 3, 2026
 
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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