Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Hazardous Weather Conditions

Heat Advisory until August 9, 07:00 PM CDT

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

91°F

33°C

Humidity	50%
Wind Speed	S 13 mph
Barometer	29.99 in (1014.7 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	97°F (36°C)
Last update	9 Aug 10:53 am CDT

More Information:

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

Extended Forecast for

5 Miles W Prosper TX

Heat Advisory August 9, 11:41am until August 9, 07:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 9, 11:41am until August 9, 07:00pm
NOW until 7:00pm Sat
Heat Advisory
Today
High: 100 °F
Hot
Tonight
Low: 79 °F
Clear
Sunday
High: 98 °F
Sunny
Sunday Night
Low: 77 °F
Mostly Clear
Monday
High: 95 °F
Mostly Sunny
then Slight
Chance
T-storms
Monday Night
Low: 73 °F
Slight Chance
T-storms
Tuesday
High: 93 °F
Chance
T-storms
Tuesday Night
Low: 75 °F
Partly Cloudy

Detailed Forecast

Today

Sunny and hot, with a high near 100. Heat index values as high as 107. South wind around 10 mph.

Tonight

Clear, with a low around 79. South southeast wind around 10 mph.

Sunday

Sunny, with a high near 98. Heat index values as high as 105. South wind 5 to 10 mph.

Sunday Night

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

Monday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. East southeast wind around 5 mph.

Monday Night

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. East northeast wind around 5 mph becoming south southeast after midnight.

Tuesday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. Calm wind becoming east southeast around 5 mph in the afternoon.

Tuesday Night

Partly cloudy, with a low around 75. South southeast wind around 5 mph.

Wednesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. South wind around 5 mph.

Wednesday Night

Partly cloudy, with a low around 76.

Thursday

Mostly sunny, with a high near 93.

Thursday Night

Mostly clear, with a low around 77.

Friday

Sunny, with a high near 96.