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

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region through 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 West 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.

Fair

74°F

23°C

Humidity	91%
Wind Speed	S 6 mph
Barometer	30.03 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	15 Jul 5:35 am CDT

More Information:

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

Extended Forecast for

Collinsville TX

Today
High: 91 °F
Chance
T-storms
Tonight
Low: 74 °F
Chance
T-storms then
Partly Cloudy
Wednesday
High: 93 °F
Mostly Sunny
Wednesday Night
Low: 74 °F
Mostly Clear
Thursday
High: 96 °F
Sunny
Thursday Night
Low: 73 °F
Mostly Clear
Friday
High: 96 °F
Sunny
Friday Night
Low: 74 °F
Mostly Clear
Saturday
High: 96 °F
Mostly Sunny

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 101. South southwest wind 5 to 10 mph.

Tonight

A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. South wind around 5 mph.

Wednesday

Mostly sunny, with a high near 93. Heat index values as high as 102. South wind 5 to 10 mph.

Wednesday Night

Mostly clear, with a low around 74. South wind 5 to 10 mph.

Thursday

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

Thursday Night

Mostly clear, with a low around 73. South wind around 5 mph becoming calm in the evening.

Friday

Sunny, with a high near 96. Calm wind becoming south around 5 mph in the afternoon.