Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Hazardous Weather Conditions

Extreme Heat Warning in effect from August 23, 12:00 PM CDT until August 23, 09:00 PM CDT

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Partly Cloudy

82°F

28°C

Humidity	53%
Wind Speed	NE 3 mph
Barometer	29.99 in
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	23 Aug 1:15 am CDT

More Information:

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

Extended Forecast for

3 Miles NNW Denison TX

Extreme Heat Warning August 23, 12:00pm until August 23, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Overnight
Low: 78 °F
Slight Chance
T-storms
Sunday
High: 106 °F
Hot
Sunday Night
Low: 83 °F
Partly Cloudy
Monday
High: 107 °F
Hot
Monday Night
Low: 83 °F
Mostly Clear
Tuesday
High: 108 °F
Hot
Tuesday Night
Low: 79 °F
Partly Cloudy
then Slight
Chance
T-storms
Wednesday
High: 103 °F
Slight Chance
T-storms
Wednesday Night
Low: 76 °F
Partly Cloudy

Detailed Forecast

Overnight

A 20 percent chance of showers and thunderstorms before 4am. Partly cloudy, with a low around 78. East wind around 5 mph.

Sunday

Mostly sunny and hot, with a high near 106. Heat index values as high as 109. East wind 5 to 10 mph becoming south in the afternoon.

Sunday Night

Partly cloudy, with a low around 83. South southeast wind 5 to 10 mph.

Monday

Mostly sunny and hot, with a high near 107. Heat index values as high as 111. Southwest wind around 10 mph, with gusts as high as 20 mph.

Monday Night

Mostly clear, with a low around 83. South wind around 10 mph.

Tuesday

Sunny and hot, with a high near 108. West southwest wind around 10 mph.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 79. Southeast wind 5 to 10 mph becoming south southwest after midnight.

Wednesday

A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 103. South southwest wind 5 to 10 mph becoming north in the afternoon.

Wednesday Night

Partly cloudy, with a low around 76. Northeast wind around 5 mph.

Thursday

Mostly sunny and hot, with a high near 102.

Thursday Night

A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 75.

Friday

Sunny and hot, with a high near 102.

Friday Night

Mostly clear, with a low around 77.

Saturday

Sunny and hot, with a high near 103.