Heavy Rainfall for the Mid-Atlantic; Heat and Wildfire Concerns for the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region today into tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the interior Northwest with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Mostly Cloudy

77°F

25°C

Humidity	89%
Wind Speed	S 8 mph
Barometer	30.04 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	14 Jul 3:50 pm CDT

More Information:

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

Extended Forecast for

Denison TX

This Afternoon
High: 87 °F
Slight Chance
T-storms
Tonight
Low: 74 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 92 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 75 °F
Partly Cloudy
Wednesday
High: 93 °F
Sunny
Wednesday Night
Low: 75 °F
Mostly Clear
Thursday
High: 96 °F
Sunny
Thursday Night
Low: 75 °F
Mostly Clear
Friday
High: 96 °F
Sunny

Detailed Forecast

This Afternoon

A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 87. South wind around 5 mph.

Tonight

A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 74. Calm wind becoming south southwest around 5 mph after midnight.

Tuesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 102. South southwest wind 5 to 10 mph.

Tuesday Night

Partly cloudy, with a low around 75. South wind around 5 mph.

Wednesday

Sunny, with a high near 93. South wind 5 to 10 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 75. South wind 5 to 10 mph.

Thursday

Sunny, with a high near 96. South wind 5 to 10 mph.

Thursday Night

Mostly clear, with a low around 75. South southeast wind around 5 mph.

Friday

Sunny, with a high near 96. South wind around 5 mph.