Dangerous Heat and Possible Flooding
Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >
Hazardous Weather Conditions
Current conditions at
McKinney - McKinney National Airport (KTKI)
Lat: 33.18°NLon: 96.59°WElev: 584ft.
Fair
93°F
34°C
| Humidity | 32% |
| Wind Speed | E 6 mph |
| Barometer | 29.92 in (1012.5 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Heat Index | 92°F (33°C) |
| Last update | 27 Aug 7:53 pm CDT |
Extended Forecast for
4 Miles S Allen TX
Tonight
Low: 78 °F
Mostly Clear
Friday
High: 101 °F
Hot
Friday Night
Low: 79 °F
Mostly Clear
Saturday
High: 101 °F
Hot
Saturday Night
Low: 79 °F
Mostly Clear
Sunday
High: 101 °F
Hot
Sunday Night
Low: 79 °F
Clear
Monday
High: 100 °F
Hot
Monday Night
Low: 79 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 78. East southeast wind 5 to 15 mph.
Friday
Sunny and hot, with a high near 101. Heat index values as high as 107. Light northeast wind becoming east 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 79. East southeast wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 101. Heat index values as high as 107. Southeast wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 79. Southeast wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 101. South wind around 10 mph.
Sunday Night
Clear, with a low around 79. South southeast wind around 10 mph.
Monday
Sunny and hot, with a high near 100. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 79. South southeast wind around 10 mph.
Tuesday
Sunny and hot, with a high near 100.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
Sunny and hot, with a high near 101.
Wednesday Night
Clear, with a low around 80.
Thursday
Sunny and hot, with a high near 102.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles S Allen TX
33.05°N 96.67°W (Elev. 564 ft)
33.05°N 96.67°W (Elev. 564 ft)
6:06 pm CDT Aug 27, 2026
8pm CDT Aug 27, 2026-6pm CDT Sep 3, 2026
Additional Resources
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