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Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

63°F

17°C

Humidity 45%
Wind Speed N 9 mph
Barometer 30.13 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 21 Jan 1:50 pm CST
Extended Forecast for

Grayson County Airport TX

Winter Storm Watch January 23, 12:00pm until January 25, 12:00pm
Extreme Cold Watch January 24, 06:00pm until January 26, 12:00pm
Click here for hazard details and duration
Winter Storm Watch
Extreme Cold Watch

  • This Afternoon

    This Afternoon: Sunny, with a high near 59. North wind 5 to 10 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 36. Northeast wind 5 to 10 mph.

    Low: 36 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 56. East southeast wind 5 to 10 mph.

    High: 56 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after midnight. Cloudy, with a low around 37. East wind 5 to 10 mph.

    Low: 37 °F

    Cloudy then
    Chance
    Showers

  • Friday

    Friday: Rain showers likely before noon, then rain showers, possibly mixed with sleet between noon and 3pm, then rain showers and freezing rain, possibly mixed with sleet after 3pm. Temperature falling to around 31 by 5pm. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 40 °F⇓

    Showers
    Likely then
    Wintry Mix

  • Friday Night

    Friday Night: Sleet, possibly mixed with freezing rain. The sleet could be heavy at times. Low around 18. Northeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

    Low: 18 °F

    Wintry Mix

  • Saturday

    Saturday: Sleet, possibly mixed with snow showers and freezing rain before noon, then snow showers and sleet. The sleet could be heavy at times. High near 22. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.

    High: 22 °F

    Wintry Mix

  • Saturday Night

    Saturday Night: Snow showers and sleet likely, mainly before midnight. Cloudy, with a low around 8. North wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 8 °F

    Snow/Sleet
    Likely

  • Sunday

    Sunday: A 20 percent chance of snow showers before noon. Partly sunny and cold, with a high near 20. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 20 °F

    Slight Chance
    Snow Showers
    then Partly
    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 59. North wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 36. Northeast wind 5 to 10 mph.
Thursday
Mostly cloudy, with a high near 56. East southeast wind 5 to 10 mph.
Thursday Night
A 40 percent chance of showers after midnight. Cloudy, with a low around 37. East wind 5 to 10 mph.
Friday
Rain showers likely before noon, then rain showers, possibly mixed with sleet between noon and 3pm, then rain showers and freezing rain, possibly mixed with sleet after 3pm. Temperature falling to around 31 by 5pm. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Friday Night
Sleet, possibly mixed with freezing rain. The sleet could be heavy at times. Low around 18. Northeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Saturday
Sleet, possibly mixed with snow showers and freezing rain before noon, then snow showers and sleet. The sleet could be heavy at times. High near 22. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.
Saturday Night
Snow showers and sleet likely, mainly before midnight. Cloudy, with a low around 8. North wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday
A 20 percent chance of snow showers before noon. Partly sunny and cold, with a high near 20. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 7.
Monday
Sunny, with a high near 32.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Mostly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayson County Airport TX
 33.71°N 96.66°W (Elev. 797 ft)
Last Update:
1:36 pm CST Jan 21, 2026
Forecast Valid:
2pm CST Jan 21, 2026-6pm CST Jan 27, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation