Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

101°F

38°C

Humidity	29%
Wind Speed	S 8 mph
Barometer	29.90 in (1011.5 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Heat Index	103°F (39°C)
Last update	20 Aug 6:53 pm CDT

More Information:

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

Extended Forecast for

Mc Kinney TX

Extreme Heat Warning August 20, 07:31pm until August 21, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 20, 07:31pm until August 21, 08:00pm
NOW until 8:00pm Fri
Extreme Heat Warning
Tonight
Low: 82 °F
Slight Chance
T-storms then
Mostly Clear
Friday
High: 106 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 81 °F
Slight Chance
T-storms then
Slight Chance
Showers
Saturday
High: 106 °F
Slight Chance
Showers
Saturday Night
Low: 80 °F
Mostly Clear
Sunday
High: 105 °F
Hot
Sunday Night
Low: 82 °F
Mostly Clear
Monday
High: 105 °F
Hot

Detailed Forecast

Tonight

A 10 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 82. South wind around 5 mph.

Friday

A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 106. Heat index values as high as 110. South wind around 5 mph.

Friday Night

A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers after 4am. Increasing clouds, with a low around 81. South southeast wind around 5 mph. Chance of precipitation is 20%.

Saturday

A 10 percent chance of showers before 7am. Sunny and hot, with a high near 106. Heat index values as high as 109. South wind around 5 mph.

Saturday Night

Mostly clear, with a low around 80. South wind around 5 mph.

Sunday

Sunny and hot, with a high near 105. South southwest wind 5 to 10 mph.

Sunday Night

Mostly clear, with a low around 82. Southeast wind 5 to 10 mph.

Monday

Sunny and hot, with a high near 105. South southwest wind around 10 mph.

Monday Night

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

Tuesday

Sunny and hot, with a high near 105.

Tuesday Night

A 20 percent chance of showers. Mostly clear, with a low around 82.

Wednesday

Sunny and hot, with a high near 102.

Wednesday Night

Mostly clear, with a low around 79.

Thursday

A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 102.