Areas of Heavy to Excessive Rainfall Which May Bring Flooding

Monsoon moisture will continue to produce areas of heavy to excessive rainfall and potential flooding across the northern Intermountain West today. Debris flows will be possible over recent wildfire burn areas. Heavy to excessive rainfall and flash flooding will be possible across the central Rockies into the south-central Plains and lower Mississippi Valley through Thursday. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

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

Mostly Cloudy

88°F

31°C

Humidity	59%
Wind Speed	E 10 mph
Barometer	30.10 in
Dewpoint	72°F (22°C)
Visibility	8.00 mi
Heat Index	95°F (35°C)
Last update	27 Aug 3:50 pm CDT

More Information:

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

Detailed forecast for

Grayson County

This Afternoon

Mostly sunny. A slight chance of showers and perhaps an isolated thunderstorm. Warmer with highs in the upper 80s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.

Tonight

Mostly clear. Lows in the lower 70s. Southeast winds around 5 mph.

Thursday

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. Southwest winds 5 to 10 mph. Chance of rain 50 percent.

Thursday Night

Partly cloudy in the evening, then becoming mostly cloudy. Showers likely. A chance of thunderstorms in the evening, then a slight chance of thunderstorms after midnight. Lows in the lower 70s. Southeast winds around 5 mph. Chance of rain 70 percent.

Friday

Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Not as warm. Humid with highs in the lower 80s. Northeast winds 5 to 10 mph. Chance of rain 50 percent.

Friday Night

Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 30 percent.

Saturday

Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.

Saturday Night

Partly cloudy in the evening, then becoming mostly cloudy. A 20 percent chance of showers. Lows in the upper 60s.

Sunday

Mostly cloudy with a chance of showers in the morning, then partly sunny with a slight chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.

Sunday Night

Partly cloudy. Lows in the mid 60s.

Labor Day

Mostly sunny. Highs in the upper 80s.

Monday Night

Mostly clear. Lows in the mid 60s.

Tuesday

Sunny. Highs in the upper 80s.