Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

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

Fair

82°F

28°C

Humidity	48%
Wind Speed	S 13 mph
Barometer	29.92 in
Dewpoint	61°F (16°C)
Visibility	9.00 mi
Heat Index	82°F (28°C)
Last update	17 Oct 11:49 am CDT

More Information:

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

Detailed forecast for

Grayson County

Today

Sunny. Highs in the mid 80s. South winds 5 to 10 mph.

Tonight

Mostly clear. A 20 percent chance of showers and thunderstorms after midnight. Lows in the upper 60s. South winds 5 to 10 mph, increasing to 10 to 15 mph after midnight.

Saturday

Mostly sunny with a chance of thunderstorms. A chance of showers. Highs in the mid 80s. Southwest winds 10 to 15 mph. Chance of rain 50 percent.

Saturday Night

Mostly clear. A 20 percent chance of showers and thunderstorms in the evening. Much cooler. Less humid with lows in the lower 50s. North winds 5 to 10 mph.

Sunday

Sunny, cooler with highs in the lower 70s. Northeast winds 5 to 10 mph.

Sunday Night

Clear. Lows in the mid 50s.

Monday

Sunny, warmer with highs in the upper 80s.

Monday Night

Mostly clear. Lows in the upper 50s.

Tuesday

Sunny. Highs in the upper 70s.

Tuesday Night

Mostly clear. Lows in the mid 50s.