Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region
Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >
Hazardous Weather Conditions
Current conditions at
Sherman/Denison, Grayson County Airport (KGYI)
Lat: 33.72° N Lon: 96.67° W Elev: 748 ft.
Overcast
79°F
26°C
| Humidity | 79% |
| Wind Speed | S 8 mph |
| Barometer | 29.87 in |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 29 Jul 5:15 am CDT |
Detailed forecast for
Grayson County
Today
Mostly sunny. Hot with highs around 100. South winds around 5 mph. Heat index values up to 109 this afternoon.
Tonight
Mostly clear. Lows in the upper 70s. South winds around 5 mph.
Thursday
Mostly sunny. Hot with highs around 100. South winds around 5 mph. Heat index values up to 108 in the afternoon.
Thursday Night
Mostly clear. Lows around 80. South winds 5 to 10 mph.
Friday
Mostly sunny. Hot with highs around 103. Southwest winds 5 to 10 mph. Heat index values up to 114 in the afternoon.
Friday Night
Partly cloudy. Lows in the upper 70s.
Saturday
Sunny. Highs in the mid 90s.
Saturday Night
Mostly clear. Lows in the lower 70s.
Sunday
Sunny. Highs in the mid 90s.
Sunday Night
Clear. Lows in the lower 70s.
Monday
Sunny. Highs in the mid 90s.
Monday Night
Clear. Lows in the mid 70s.
Tuesday
Sunny. Highs in the upper 90s.
Additional Forecasts and Information
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