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

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Partly Cloudy

89°F

32°C

Humidity	39%
Wind Speed	Calm
Barometer	29.96 in (1013.6 mb)
Dewpoint	61°F (16°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	22 Aug 11:53 pm CDT

More Information:

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

Extended Forecast for

4 Miles WNW Copeville 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: 81 °F
Slight Chance
T-storms
Sunday
High: 105 °F
Hot
Sunday Night
Low: 84 °F
Partly Cloudy
Monday
High: 105 °F
Hot
Monday Night
Low: 83 °F
Mostly Clear
Tuesday
High: 104 °F
Hot
Tuesday Night
Low: 81 °F
Mostly Clear
then Slight
Chance
T-storms
Wednesday
High: 101 °F
Slight Chance
Showers then
Slight Chance
T-storms
Wednesday Night
Low: 78 °F
Slight Chance
T-storms

Detailed Forecast

Overnight

A 20 percent chance of showers and thunderstorms before 4am. Partly cloudy, with a low around 81. East wind 5 to 15 mph.

Sunday

Mostly sunny and hot, with a high near 105. Heat index values as high as 110. South wind around 5 mph.

Sunday Night

Partly cloudy, with a low around 84. South wind 5 to 15 mph, with gusts as high as 20 mph.

Monday

Mostly sunny and hot, with a high near 105. Heat index values as high as 111. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Monday Night

Mostly clear, with a low around 83. South wind 10 to 15 mph, with gusts as high as 20 mph.

Tuesday

Sunny and hot, with a high near 104. Southwest wind 10 to 15 mph.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 81. South wind 5 to 10 mph.

Wednesday

A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny and hot, with a high near 101. West wind 5 to 10 mph. Chance of precipitation is 20%.

Wednesday Night

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 78. North northeast wind around 5 mph becoming east southeast in the evening.

Thursday

Sunny and hot, with a high near 99.

Thursday Night

A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 77.

Friday

Sunny and hot, with a high near 99.

Friday Night

Mostly clear, with a low around 78.

Saturday

Sunny and hot, with a high near 99.