Severe Weather Threat and Extreme Temperatures Impacting Portions of the Southern U.S

Strong to severe thunderstorms are expected to develop from central Texas into the Ohio Valley and Great Lakes Wednesday. Areas who will see the greatest chances for damaging hail and winds will be from north Texas to the Ozarks. Parts of south Texas and Florida will experience dangerous to extreme heat over the next several days. Dangerous heat stress may continue into early next week. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Partly Cloudy

77°F

25°C

Humidity	74%
Wind Speed	E 7 mph
Barometer	29.83 in
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	22 May 5:50 pm CDT

More Information:

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

Extended Forecast for

4 Miles NNW Southmayd TX

Flood Watch May 22, 06:43pm until May 24, 01:00am

Tornado Watch May 22, 06:43pm until May 22, 08:00pm

Click here for hazard details and duration

Flood Watch

...

Flood Watch May 22, 06:43pm until May 24, 01:00am
Tornado Watch May 22, 06:43pm until May 22, 08:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 67 °F
Severe
Thunderstorms
Thursday
High: 83 °F
Chance
T-storms
Thursday Night
Low: 69 °F
Slight Chance
T-storms
Friday
High: 90 °F
Mostly Sunny
Friday Night
Low: 68 °F
Mostly Clear
Saturday
High: 89 °F
Mostly Sunny
Saturday Night
Low: 73 °F
Mostly Clear
Sunday
High: 93 °F
Sunny

Detailed Forecast

Tonight

A 50 percent chance of showers and thunderstorms, mainly before 4am. Some of the storms could be severe. Mostly cloudy, with a low around 67. East southeast wind around 5 mph. New rainfall amounts between a quarter and half of an inch possible.

Thursday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 83. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

Thursday Night

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 69. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

Friday

Mostly sunny, with a high near 90. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

Friday Night

Mostly clear, with a low around 68. South wind around 5 mph.

Saturday

Mostly sunny, with a high near 89. South wind 5 to 15 mph, with gusts as high as 20 mph.

Saturday Night

Mostly clear, with a low around 73. South wind 10 to 15 mph, with gusts as high as 25 mph.

Sunday

Sunny, with a high near 93. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

Sunday Night

Clear, with a low around 66. South southwest wind 5 to 10 mph becoming north after midnight.