Ophelia Impacting the East; Heavy Rainfall and Severe Threats for the Center of the Nation

Heavy rain, gusty winds, storm surge, high surf and rip currents that could be life threatening, will affect the Mid-Atlantic through this weekend. For the center of the nation, a cold front will focus showers and thunderstorms, some severe with excessive rainfall and flash flooding, through the weekend. Meanwhile, much cooler temperatures and a wet weather pattern enters the Pacific Northwest. Read More >

Hazardous Weather Conditions

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Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

89°F

32°C

Humidity	56%
Wind Speed	S 12 G 18 mph
Barometer	29.79 in
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	95°F (35°C)
Last update	23 Sep 8:35 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

Extended Forecast for

Grayson County Airport TX

Heat Advisory until September 24, 07:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory until September 24, 07:00pm

NOW until
7:00pm Sun

Heat Advisory
Tonight

Slight Chance
T-storms
Low: 77 °F
Sunday

Partly Sunny
then Severe
Thunderstorms
High: 94 °F
Sunday
Night

Severe
Thunderstorms
Low: 69 °F
Monday

Chance
T-storms
High: 87 °F
Monday
Night

Mostly Clear
Low: 65 °F
Tuesday

Sunny
High: 89 °F
Tuesday
Night

Mostly Clear
Low: 64 °F
Wednesday

Sunny
High: 89 °F

Detailed Forecast

Tonight

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 20 mph.

Sunday

A 30 percent chance of showers and thunderstorms after 1pm. Some of the storms could be severe. Partly sunny, with a high near 94. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 20 mph.

Sunday Night

Showers and thunderstorms likely. Some of the storms could be severe. Cloudy, with a low around 69. East wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

Monday

A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Northeast wind 5 to 10 mph.

Monday Night

Mostly clear, with a low around 65. Northeast wind 5 to 10 mph.

Tuesday

Sunny, with a high near 89. East northeast wind 5 to 10 mph.

Tuesday Night

Mostly clear, with a low around 64. Southeast wind 5 to 10 mph.

Wednesday

Sunny, with a high near 89. East southeast wind around 5 mph.

Wednesday Night

Mostly clear, with a low around 65. Southeast wind 5 to 10 mph.

Thursday

Sunny, with a high near 90.