Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Hazardous Weather Conditions

Heat Advisory until September 6, 08:00 PM CDT

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

93°F

34°C

Humidity	50%
Wind Speed	SE 9 mph
Barometer	29.97 in (1013.9 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	101°F (38°C)
Last update	6 Sep 11:53 am CDT

More Information:

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

Extended Forecast for

McKinney TX

Heat Advisory September 6, 12:37pm until September 6, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory September 6, 12:37pm until September 6, 08:00pm
NOW until 8:00pm Sun
Heat Advisory
This Afternoon
High: 100 °F
Slight Chance
T-storms
Tonight
Low: 79 °F
Mostly Clear
Labor Day
High: 101 °F
Hot
Monday Night
Low: 79 °F
Mostly Clear
Tuesday
High: 101 °F
Hot
Tuesday Night
Low: 79 °F
Mostly Clear
Wednesday
High: 100 °F
Hot
Wednesday Night
Low: 78 °F
Mostly Clear

Detailed Forecast

This Afternoon

A 10 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 100. Heat index values as high as 105. East southeast wind 5 to 10 mph.

Tonight

Mostly clear, with a low around 79. Southeast wind 5 to 10 mph becoming light south after midnight.

Labor Day

Sunny and hot, with a high near 101. Heat index values as high as 106. Light south wind becoming southeast 5 to 10 mph in the afternoon.

Monday Night

Mostly clear, with a low around 79. South southeast wind 5 to 10 mph.

Tuesday

Sunny and hot, with a high near 101. Light south southeast wind becoming south 5 to 10 mph in the afternoon.

Tuesday Night

Mostly clear, with a low around 79. South wind 5 to 10 mph.

Wednesday

Sunny and hot, with a high near 100. South wind 5 to 10 mph.