Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Heat Advisory until August 18, 08:00 PM CDT

Current conditions at

McKinney - McKinney National Airport (KTKI)

Lat: 33.18°NLon: 96.59°WElev: 584ft.

Fair

94°F

34°C

Humidity	41%
Wind Speed	S 9 mph
Barometer	29.97 in (1014.0 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Heat Index	98°F (37°C)
Last update	17 Aug 3:53 pm CDT

More Information:

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

Extended Forecast for

3 Miles NNW Westminster TX

Heat Advisory August 17, 04:31pm until August 18, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 17, 04:31pm until August 18, 08:00pm
NOW until 8:00pm Mon
Heat Advisory
This Afternoon
High: 97 °F
Slight Chance
T-storms
Tonight
Low: 76 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 99 °F
Sunny then
Slight Chance
T-storms
Monday Night
Low: 77 °F
Mostly Clear
Tuesday
High: 98 °F
Sunny
Tuesday Night
Low: 76 °F
Mostly Clear
then Slight
Chance
T-storms
Wednesday
High: 95 °F
Chance
T-storms
Wednesday Night
Low: 72 °F
Chance
T-storms

Detailed Forecast

This Afternoon

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97. Heat index values as high as 104. South wind around 10 mph.

Tonight

A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening.

Monday

A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 99. Heat index values as high as 108. Calm wind becoming southwest around 5 mph in the afternoon.

Monday Night

Mostly clear, with a low around 77. South southeast wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 98. Calm wind becoming east northeast around 5 mph in the afternoon.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. East wind around 5 mph becoming calm in the evening.

Wednesday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 95. Calm wind becoming north around 5 mph in the afternoon.

Wednesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 72. North northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

Thursday

A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 94. North northeast wind 5 to 10 mph. Chance of precipitation is 40%.

Thursday Night

A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 72.

Friday

A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.

Friday Night

Mostly clear, with a low around 71.

Saturday

Sunny, with a high near 94.

Saturday Night

Mostly clear, with a low around 72.

Sunday

Sunny, with a high near 93.