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

Excessive Rainfall and Severe Thunderstorms Threaten the Southern U.S. Again Thursday

A Moderate Risk (Level 3 of 4) Excessive Rainfall Outlook and Flood Watches have been issued for portions of east Texas into Louisiana Thursday where flash, urban, and riverine flooding is possible. A Slight Risk (Level 2 of 5) for scattered severe thunderstorms has been issued from west Texas to the lower Mississippi Valley Thursday afternoon into Thursday night. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

62°F

17°C

Humidity 90%
Wind Speed SE 3 mph
Barometer 29.78 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 May 2:55 am CDT
Extended Forecast for

5 Miles WSW Grayson County Airport TX

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 1pm. Patchy fog between 7am and 1pm. Otherwise, partly sunny, with a high near 79. Calm wind becoming west northwest around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    T-storms and
    Patchy Fog

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 1pm. Otherwise, sunny, with a high near 88. Calm wind becoming south southwest around 5 mph.

    High: 88 °F

    Patchy Fog

  • Saturday Night

    Saturday Night: Clear, with a low around 67. Calm wind becoming southeast around 5 mph.

    Low: 67 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 89. South southeast wind 5 to 10 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 70. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 90. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 74. South wind around 15 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Calm wind.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 1pm. Patchy fog between 7am and 1pm. Otherwise, partly sunny, with a high near 79. Calm wind becoming west northwest around 5 mph in the afternoon. Chance of precipitation is 40%.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 62. Calm wind.
Saturday
Patchy fog before 1pm. Otherwise, sunny, with a high near 88. Calm wind becoming south southwest around 5 mph.
Saturday Night
Clear, with a low around 67. Calm wind becoming southeast around 5 mph.
Sunday
Sunny, with a high near 89. South southeast wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 70. South southeast wind around 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 90. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 74. South wind around 15 mph, with gusts as high as 20 mph.
Tuesday
A 10 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Grayson County Airport TX
 33.71°N 96.76°W (Elev. 699 ft)
Last Update:
11:33 pm CDT May 16, 2024
Forecast Valid:
3am CDT May 17, 2024-6pm CDT May 23, 2024
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation