Areas of Excessive Rainfall and Extreme Heat; Monitoring Tropical Storm Erin
Heavy to excessive rainfall over the southern Appalachians may bring areas of flooding Tuesday. Hot to extremely hot temperatures are in place through Tuesday across much of the western U.S. and northern New England. Tropical Storm Erin is forecast to become a Major Hurricane by this weekend as it moves across the central Atlantic Ocean. Monitor future forecasts for any East Coast impacts. Read More >
Hazardous Weather Conditions
Current conditions at
McKinney - McKinney National Airport (KTKI)
Lat: 33.18° N Lon: 96.59° W Elev: 584 ft.
Fair
85°F
29°C
| Humidity | 59% |
| Wind Speed | SE 8 mph |
| Barometer | 29.95 in (1013.4 mb) |
| Dewpoint | 69°F (21°C) |
| Visibility | 10.00 mi |
| Heat Index | 89°F (32°C) |
| Last update | 11 Aug 10:53 pm CDT |
Detailed forecast for
Collin County
Tonight
Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph.
Tuesday
Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. West winds around 5 mph. Chance of rain 30 percent.
Tuesday Night
Partly cloudy. Humid with lows in the mid 70s. Southeast winds around 5 mph.
Wednesday
Mostly sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 105.
Wednesday Night
Partly cloudy. Humid with lows in the mid 70s. Southeast winds around 5 mph.
Thursday
Mostly sunny. Highs in the mid 90s. Heat index values up to 110 in the afternoon.
Thursday Night
Partly cloudy in the evening, then clearing. Lows in the upper 70s.
Friday
Mostly sunny. Highs in the upper 90s. Heat index values up to 110 in the afternoon.
Friday Night
Partly cloudy. Lows in the upper 70s.
Saturday
Mostly sunny. Highs in the mid 90s. Heat index values up to 110 in the afternoon.
Saturday Night
Partly cloudy. Lows in the upper 70s.
Sunday
Mostly sunny. Highs in the upper 90s. Heat index values up to 105.
Sunday Night
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s.
Monday
Mostly sunny. Hot with highs in the upper 90s. Heat index values up to 105.
Additional Forecasts and Information
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