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Heavy rain and severe weather will exacerbate ongoing flooding in the central and southern U.S.

Additional heavy rain will increase the threat of flooding in the central and southern U.S. this weekend. There is a High Risk of excessive rainfall for parts of ArkLaTex, as well as the Mid-Mississippi and Lower Ohio River Valleys on Saturday. Severe thunderstorms, some of which could include significant tornadoes and very large hail, are also possible on Saturday for much of the same area. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Light Rain

47°F

8°C

Humidity 99%
Wind Speed SE 12 mph
Barometer 29.88 in
Dewpoint 46°F (8°C)
Visibility 2.50 mi
Wind Chill42°F (6°C)
Last update 24 Feb 6:15 am CST
Extended Forecast for

Grayson County Airport TX

Flood Watch until February 24, 04:00pm
Dense Fog Advisory until February 24, 09:00am
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Watch until February 24, 04:00pm
    Dense Fog Advisory until February 24, 09:00am

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • Today

    Today: Showers and thunderstorms, mainly before noon. Some storms could be severe, with heavy rain.  Areas of dense fog before 9am. High near 61. Light and variable wind becoming west southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Severe
    Thunderstorms
    and Areas
    Dense Fog

    High: 61 °F

  • Tonight

    Tonight: Mostly clear, with a low around 37. West wind 5 to 10 mph becoming east after midnight.

    Mostly Clear

    Low: 37 °F

  • Sunday

    Sunday: Sunny, with a high near 64. East wind 5 to 10 mph becoming south in the afternoon.

    Sunny

    High: 64 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 38. South southeast wind around 5 mph becoming calm  in the evening.

    Partly Cloudy

    Low: 38 °F

  • Monday

    Monday: Mostly sunny, with a high near 65. North northeast wind around 5 mph becoming south southeast in the afternoon.

    Mostly Sunny

    High: 65 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 44. South southeast wind around 5 mph.

    Mostly Cloudy

    Low: 44 °F

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 64. South southeast wind 5 to 15 mph.

    Chance
    T-storms

    High: 64 °F

  • Tuesday
    Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms.  Cloudy, with a low around 54. South wind around 10 mph.

    Chance
    T-storms

    Low: 54 °F

Detailed Forecast

Today
Showers and thunderstorms, mainly before noon. Some storms could be severe, with heavy rain. Areas of dense fog before 9am. High near 61. Light and variable wind becoming west southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Mostly clear, with a low around 37. West wind 5 to 10 mph becoming east after midnight.
Sunday
Sunny, with a high near 64. East wind 5 to 10 mph becoming south in the afternoon.
Sunday Night
Partly cloudy, with a low around 38. South southeast wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 65. North northeast wind around 5 mph becoming south southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 44. South southeast wind around 5 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 64. South southeast wind 5 to 15 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 54. South wind around 10 mph.
Wednesday
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 66. South southwest wind around 10 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 46.
Thursday
Sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 40.
Friday
Sunny, with a high near 63.
Click Map For Forecast
Point Forecast:
Grayson County Airport TX
 33.73°N 96.68°W (Elev. 715 ft)
3:33 am CST Feb 24, 2018
6am CST Feb 24, 2018-6pm CST Mar 2, 2018
 
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