Hot Temperatures, Excessive Rainfall, and Severe Thunderstorms in the Eastern U.S.

Hot temperatures are expected again today along the Mid-Atlantic, Southeast, and lower Mississippi Valley. Heavy to excessive rainfall from thunderstorms today in parts of the Midwest to the Mid-Atlantic regions may bring areas of flooding. Severe thunderstorms pose a risk for damaging wind gusts across the Mid Atlantic region again today. Read More >

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Mostly Cloudy

91°F

33°C

Humidity	54%
Wind Speed	Calm
Barometer	30.02 in (1015.8 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	5 Jul 11:53 am CDT

More Information:

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

Extended Forecast for

McKinney TX

This Afternoon
High: 99 °F
Chance
T-storms
Tonight
Low: 76 °F
Chance
T-storms
Monday
High: 97 °F
Mostly Sunny
Monday Night
Low: 75 °F
Slight Chance
T-storms then
Slight Chance
Showers
Tuesday
High: 97 °F
Sunny
Tuesday Night
Low: 78 °F
Mostly Clear
Wednesday
High: 98 °F
Sunny
Wednesday Night
Low: 78 °F
Mostly Clear
Thursday
High: 100 °F
Hot

Detailed Forecast

This Afternoon

A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny and hot, with a high near 99. Heat index values as high as 106. Southwest wind around 5 mph becoming east. Chance of precipitation is 40%.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 76. Northeast wind around 5 mph becoming calm in the evening.

Monday

Mostly sunny, with a high near 97. Heat index values as high as 102. Calm wind becoming east northeast around 5 mph in the afternoon.

Monday Night

A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 75. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

Tuesday

Sunny, with a high near 97. Calm wind becoming southeast around 5 mph in the afternoon.

Tuesday Night

Mostly clear, with a low around 78. East southeast wind around 5 mph.

Wednesday

Sunny, with a high near 98. South southwest wind 5 to 10 mph.

Wednesday Night

Mostly clear, with a low around 78. South southeast wind around 10 mph, with gusts as high as 20 mph.

Thursday

Sunny and hot, with a high near 100. South wind 10 to 15 mph, with gusts as high as 20 mph.

Thursday Night

Mostly clear, with a low around 79.