Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Hazardous Weather Conditions

Heat Advisory until August 27, 08:00 PM CDT

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

95°F

35°C

Humidity	41%
Wind Speed	NE 10 mph
Barometer	29.93 in
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	100°F (38°C)
Last update	26 Aug 4:50 pm CDT

More Information:

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

Extended Forecast for

Southmayd TX

Heat Advisory August 26, 05:48pm until August 27, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 26, 05:48pm until August 27, 08:00pm
NOW until 8:00pm Thu
Heat Advisory
This Afternoon
High: 97 °F
Slight Chance
T-storms
Tonight
Low: 75 °F
Slight Chance
T-storms then
Mostly Clear
Thursday
High: 98 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 74 °F
Slight Chance
T-storms then
Slight Chance
Showers
Friday
High: 96 °F
Sunny
Friday Night
Low: 75 °F
Mostly Clear
Saturday
High: 98 °F
Sunny
Saturday Night
Low: 76 °F
Clear

Detailed Forecast

This Afternoon

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97. Heat index values as high as 104. North wind around 10 mph.

Tonight

A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 75. North wind 5 to 10 mph.

Thursday

A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 98. Heat index values as high as 106. Northeast wind 5 to 10 mph. Chance of precipitation is 20%.

Thursday Night

A slight chance of thunderstorms before 7pm, then a slight chance of showers after 1am. Partly cloudy, with a low around 74. Northeast wind around 5 mph becoming east southeast after midnight. Chance of precipitation is 20%.

Friday

Sunny, with a high near 96. East wind around 5 mph.

Friday Night

Mostly clear, with a low around 75. Southeast wind around 5 mph.

Saturday

Sunny, with a high near 98. South wind around 5 mph.

Saturday Night

Clear, with a low around 76. South southeast wind 5 to 10 mph.

Sunday

Sunny, with a high near 98. South wind around 10 mph.

Sunday Night

Clear, with a low around 76.