Thunderstorms Expected From the Ozarks to the Middle Mississippi Valley: Watching the Tropics

Isolated severe thunderstorms are forecast Monday afternoon from the Ozarks into parts of the Tennessee and lower Ohio Valleys. A tropical disturbance could form by the middle part of next week over the northwestern Caribbean Sea. Gradual development is possible as it moves into the Gulf of Mexico late week with possible U.S. impacts next weekend. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

93°F

34°C

Humidity	36%
Wind Speed	SE 8 mph
Barometer	29.83 in (1009.4 mb)
Dewpoint	62°F (17°C)
Visibility	10.00 mi
Heat Index	94°F (34°C)
Last update	22 Sep 5:53 pm CDT

More Information:

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

Extended Forecast for

McKinney TX

Tonight
Low: 70 °F
Mostly Cloudy
then Chance
Showers
Monday
High: 82 °F
Chance
T-storms
Monday Night
Low: 65 °F
Partly Cloudy
then Slight
Chance
T-storms
Tuesday
High: 87 °F
Slight Chance
Showers
Tuesday Night
Low: 63 °F
Chance
T-storms
Wednesday
High: 83 °F
Slight Chance
T-storms then
Slight Chance
Showers
Wednesday Night
Low: 61 °F
Partly Cloudy
Thursday
High: 82 °F
Mostly Sunny
Thursday Night
Low: 62 °F
Partly Cloudy

Detailed Forecast

Tonight

A 30 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 70. South southeast wind around 5 mph becoming north northwest after midnight.

Monday

A 40 percent chance of showers and thunderstorms, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. Northwest wind 5 to 10 mph.

Monday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Northwest wind around 5 mph becoming calm in the evening.

Tuesday

A 20 percent chance of showers. Mostly sunny, with a high near 87. Calm wind becoming northwest around 5 mph in the afternoon.

Tuesday Night

A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. East wind around 5 mph becoming calm.

Wednesday

A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 83. North wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Wednesday Night

Partly cloudy, with a low around 61. North wind 5 to 10 mph.

Thursday

Mostly sunny, with a high near 82. North wind 5 to 10 mph, with gusts as high as 20 mph.

Thursday Night

Partly cloudy, with a low around 62. North wind 5 to 10 mph.

Friday

A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 81.

Friday Night

Partly cloudy, with a low around 64.

Saturday

Mostly sunny, with a high near 84.