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.

N/A

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	* Not a current observation *

More Information:

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

Extended Forecast for

3 Miles NNE Collinsville TX

Today
High: 92 °F
Chance
T-storms then
Showers
Likely
Tonight
Low: 72 °F
Showers
Likely then
Chance
T-storms
Monday
High: 88 °F
Chance
Showers then
Chance
T-storms
Monday Night
Low: 71 °F
Partly Cloudy
Tuesday
High: 88 °F
Chance
T-storms
Tuesday Night
Low: 70 °F
Chance
T-storms
Wednesday
High: 88 °F
Slight Chance
T-storms
Wednesday Night
Low: 71 °F
Partly Cloudy
Thursday
High: 90 °F
Mostly Sunny

Detailed Forecast

Today

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 92. Heat index values as high as 97. South southwest wind around 5 mph becoming east southeast in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms, mainly between 7pm and 4am. Mostly cloudy, with a low around 72. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday

A 40 percent chance of showers and thunderstorms, mainly after 10am. Partly sunny, with a high near 88. Heat index values as high as 99. Calm wind becoming east southeast around 5 mph in the afternoon.

Monday Night

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

Tuesday

A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.

Tuesday Night

A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm in the evening.

Wednesday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph.

Wednesday Night

Partly cloudy, with a low around 71. South wind around 5 mph.

Thursday

Mostly sunny, with a high near 90. South southwest wind 5 to 10 mph.

Thursday Night

Partly cloudy, with a low around 74.

Friday

Mostly sunny, with a high near 92.

Friday Night

Mostly clear, with a low around 76.