Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

A Few Clouds

87°F

31°C

Humidity	61%
Wind Speed	SE 7 mph
Barometer	29.93 in (1012.8 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	93°F (34°C)
Last update	4 Jul 9:53 pm CDT

More Information:

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

Extended Forecast for

McKinney TX

Tonight
Low: 79 °F
Partly Cloudy
Sunday
High: 98 °F
Mostly Sunny
then Chance
Showers
Sunday Night
Low: 77 °F
Chance
Showers
Monday
High: 96 °F
Mostly Sunny
Monday Night
Low: 76 °F
Slight Chance
T-storms then
Slight Chance
Showers
Tuesday
High: 95 °F
Mostly Sunny
Tuesday Night
Low: 78 °F
Mostly Clear
Wednesday
High: 99 °F
Hot
Wednesday Night
Low: 81 °F
Mostly Clear

Detailed Forecast

Tonight

Partly cloudy, with a low around 79. South southeast wind 5 to 10 mph.

Sunday

A 30 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 98. Heat index values as high as 103. South southeast wind 5 to 10 mph becoming west in the afternoon.

Sunday Night

A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 77. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.

Monday

Mostly sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming east around 5 mph in the morning.

Monday Night

A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 76. East northeast wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 20%.

Tuesday

Mostly sunny, with a high near 95. Calm wind becoming east around 5 mph in the afternoon.

Tuesday Night

Mostly clear, with a low around 78. East wind 5 to 10 mph becoming south after midnight.

Wednesday

Sunny and hot, with a high near 99. South southwest wind 5 to 10 mph.

Wednesday Night

Mostly clear, with a low around 81. South southeast wind around 10 mph, with gusts as high as 20 mph.

Thursday

Sunny and hot, with a high near 101.

Thursday Night

Clear, with a low around 82.