Record Heat for the Intermountain West and Northern Plains; Heavy Rainfall and Severe Weather Threats

Record setting heat is expected over the next several days from the Intermountain West through the northern Plains. Furthermore, fire weather concerns increase with dry and breezy conditions. Meanwhile, heavy rainfall and severe thunderstorm threats for the Ohio/Tennessee Valleys, central Appalachians and Southeast today. The threat shifts to central Gulf Coast and across central Texas this week. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Mostly Cloudy

81°F

27°C

Humidity	79%
Wind Speed	Vrbl 3 mph
Barometer	30.16 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	13 Jul 10:50 am CDT

More Information:

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

Extended Forecast for

Denison TX

Today
High: 87 °F
Chance
T-storms
Tonight
Low: 71 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 90 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 71 °F
Partly Cloudy
Wednesday
High: 90 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 72 °F
Partly Cloudy
Thursday
High: 91 °F
Mostly Sunny
Thursday Night
Low: 74 °F
Partly Cloudy
Friday
High: 92 °F
Mostly Sunny

Detailed Forecast

Today

A 40 percent chance of showers and thunderstorms, mainly before 4pm. Mostly sunny, with a high near 87. East wind around 5 mph.

Tonight

A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 71. East southeast wind around 5 mph becoming calm in the evening.

Tuesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Calm wind becoming east around 5 mph in the morning.

Tuesday Night

Partly cloudy, with a low around 71. East southeast wind around 5 mph becoming calm in the evening.

Wednesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon.

Wednesday Night

Partly cloudy, with a low around 72. South wind around 5 mph.

Thursday

Mostly sunny, with a high near 91. South southwest wind 5 to 10 mph.

Thursday Night

Partly cloudy, with a low around 74. South wind around 5 mph.

Friday

Mostly sunny, with a high near 92. South wind 5 to 10 mph.

Friday Night

Mostly clear, with a low around 76.

Saturday

Sunny, with a high near 94.