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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

39°F

4°C

Humidity 77%
Wind Speed N 13 mph
Barometer 30.26 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 7 Dec 7:15 pm CST
Extended Forecast for

Grayson County Airport TX

  • Tonight

    Tonight: Mostly clear, with a low around 30. North wind 5 to 10 mph.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 51. North wind around 5 mph becoming calm in the morning.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 35. Light south wind becoming south southwest 5 to 10 mph in the evening.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43. South southwest wind 10 to 15 mph.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63. South southwest wind 5 to 10 mph becoming north northeast in the afternoon.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. Northeast wind around 5 mph becoming south southeast after midnight.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64. South wind 5 to 10 mph becoming north northeast in the afternoon.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 36. North northeast wind 5 to 10 mph.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 30. North wind 5 to 10 mph.
Monday
Sunny, with a high near 51. North wind around 5 mph becoming calm in the morning.
Monday Night
Mostly clear, with a low around 35. Light south wind becoming south southwest 5 to 10 mph in the evening.
Tuesday
Sunny, with a high near 63. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 43. South southwest wind 10 to 15 mph.
Wednesday
Sunny, with a high near 63. South southwest wind 5 to 10 mph becoming north northeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 40. Northeast wind around 5 mph becoming south southeast after midnight.
Thursday
Sunny, with a high near 64. South wind 5 to 10 mph becoming north northeast in the afternoon.
Thursday Night
Mostly clear, with a low around 36. North northeast wind 5 to 10 mph.
Friday
Sunny, with a high near 53.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 44.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Mostly sunny, with a high near 49.
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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:
5:06 pm CST Dec 7, 2025
Forecast Valid:
7pm CST Dec 7, 2025-6pm CST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation