Showers and Thunderstorms from the Great Lakes into the Southern Plains

Frontal boundary and wave of low pressure will keep an active weather pattern from the Great Lakes region through the southern Plains the next couple of days. Isolated instances of severe thunderstorms and flash flooding are possible. Meanwhile, as summer comes to a close, above normal temperatures continue for central and eastern U.S. - especially for most of Puerto Rico with excessive heat. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Mostly Cloudy

75°F

24°C

Humidity	94%
Wind Speed	NE 7 mph
Barometer	29.91 in
Dewpoint	73°F (23°C)
Visibility	8.00 mi
Last update	21 Sep 1:50 pm CDT

More Information:

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

Extended Forecast for

Southmayd TX

This Afternoon
High: 90 °F
Chance
T-storms
Tonight
Low: 71 °F
Slight Chance
T-storms
Monday
High: 92 °F
Mostly Sunny
Monday Night
Low: 74 °F
Mostly Clear
Tuesday
High: 92 °F
Slight Chance
Showers then
Chance
T-storms
Tuesday Night
Low: 69 °F
Showers
Likely
Wednesday
High: 80 °F
Chance
Showers
Wednesday Night
Low: 63 °F
Partly Cloudy
Thursday
High: 80 °F
Sunny

Detailed Forecast

This Afternoon

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. South wind around 10 mph.

Tonight

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. South southeast wind around 10 mph.

Monday

Mostly sunny, with a high near 92. Heat index values as high as 101. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Monday Night

Mostly clear, with a low around 74. South wind around 10 mph, with gusts as high as 20 mph.

Tuesday

A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. South southwest wind around 10 mph. Chance of precipitation is 40%.

Tuesday Night

Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 69. South wind around 5 mph becoming north after midnight. Chance of precipitation is 70%.

Wednesday

A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Partly sunny, with a high near 80. Northwest wind around 10 mph. Chance of precipitation is 30%.

Wednesday Night

Partly cloudy, with a low around 63. North northwest wind 5 to 10 mph.

Thursday

Sunny, with a high near 80. North northwest wind 5 to 10 mph.

Thursday Night

Mostly clear, with a low around 60.

Friday

Sunny, with a high near 82.

Friday Night

Mostly clear, with a low around 60.

Saturday

Mostly sunny, with a high near 82.