Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72° N Lon: 96.67° W Elev: 748 ft.

Fair

90°F

32°C

Humidity 45%
Wind Speed SE 9 mph
Barometer 30.01 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 14 Aug 9:15 pm CDT
Detailed forecast for

Grayson County

Tonight
Mostly clear. Lows in the upper 70s. South winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight.
Saturday
Sunny, hot with highs around 100. South winds 5 to 10 mph. Heat index values up to 105.
Saturday Night
Clear. Lows in the upper 70s. South winds 5 to 10 mph.
Sunday
Sunny, hot with highs around 101. Southwest winds 5 to 10 mph. Heat index values up to 106.
Sunday Night
Mostly clear. Lows in the upper 70s. South winds around 5 mph.
Monday
Sunny, hot with highs around 100. Heat index values up to 105.
Monday Night
Mostly clear. Lows in the upper 70s.
Tuesday
Sunny, hot with highs around 100. Heat index values up to 105.
Tuesday Night
Mostly clear. Lows in the upper 70s.
Wednesday
Sunny, hot with highs around 100. Heat index values up to 110 in the afternoon.
Wednesday Night
Mostly clear. Lows in the upper 70s.
Thursday
Sunny, hot with highs around 100. Heat index values up to 105.
Thursday Night
Mostly clear. Lows in the upper 70s.
Friday
Sunny, hot with highs around 100. Heat index values up to 105.



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618 PM CDT Fri Aug 14 2026
 
 

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