Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Hazardous Weather Conditions

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

94°F

34°C

Humidity	38%
Wind Speed	N 5 mph
Barometer	29.88 in (1010.9 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Heat Index	96°F (36°C)
Last update	26 Aug 6:53 pm CDT

More Information:

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

Extended Forecast for

Prosper TX

Heat Advisory August 26, 07:41pm until August 27, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 26, 07:41pm until August 27, 08:00pm
NOW until 8:00pm Thu
Heat Advisory
Tonight
Low: 78 °F
Slight Chance
T-storms then
Slight Chance
Showers
Thursday
High: 100 °F
Hot
Thursday Night
Low: 76 °F
Partly Cloudy
Friday
High: 98 °F
Sunny
Friday Night
Low: 77 °F
Mostly Clear
Saturday
High: 100 °F
Hot
Saturday Night
Low: 78 °F
Clear
Sunday
High: 99 °F
Hot

Detailed Forecast

Tonight

A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 4am. Mostly clear, with a low around 78. North wind 5 to 10 mph. Chance of precipitation is 20%.

Thursday

Sunny and hot, with a high near 100. Heat index values as high as 110. Northeast wind 5 to 10 mph.

Thursday Night

Partly cloudy, with a low around 76. East wind 5 to 10 mph.

Friday

Sunny, with a high near 98. Heat index values as high as 107. East wind 5 to 10 mph.

Friday Night

Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.

Saturday

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

Saturday Night

Clear, with a low around 78. South southeast wind around 10 mph.