Storms in the East; Monsoons and Fire Weather Out West

A slow moving frontal system will bring strong to severe storms, and, locally heavy rain from the Plains to the Northeast. Monsoon moisture shifts to the east into portions of the southern Plains and may produce excessive rains across portions of the High Plains and desert southwest. Fire Weather threats remain elevated to critical with isolated dry thunderstorms in the Intermountain West. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

En Español

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Light Rain

82°F

28°C

Humidity	72%
Wind Speed	SW 9 mph
Barometer	30.04 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	87°F (31°C)
Last update	17 Aug 7:55 am CDT

More Information:

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

Extended Forecast for

Denison TX

Today

Chance
T-storms
High: 96 °F
Tonight

Chance
T-storms
Low: 75 °F
Saturday

Slight Chance
T-storms
High: 94 °F
Saturday
Night

Chance
T-storms
Low: 75 °F
Sunday

Chance
T-storms
High: 92 °F
Sunday
Night

Chance
T-storms
Low: 74 °F
Monday

Chance
T-storms
High: 90 °F
Monday
Night

Chance
T-storms then
Mostly Clear
Low: 69 °F
Tuesday

Sunny
High: 88 °F

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 96. Heat index values as high as 103. Southwest wind 10 to 15 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 75. South wind 5 to 10 mph becoming east southeast after midnight.

Saturday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. Heat index values as high as 101. South southeast wind around 5 mph becoming west northwest in the afternoon.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 75. East northeast wind around 5 mph.

Sunday

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 92. South wind 5 to 10 mph.

Sunday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. South wind 5 to 10 mph.

Monday

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. South southwest wind around 5 mph becoming northwest in the afternoon.

Monday Night

A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 69. North northwest wind 5 to 10 mph.

Tuesday

Sunny, with a high near 88. North northwest wind 5 to 10 mph.

Tuesday Night

Mostly clear, with a low around 67.

Wednesday

Mostly sunny, with a high near 87.

Wednesday Night

Mostly clear, with a low around 66.

Thursday

Sunny, with a high near 88.