Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

88°F

31°C

Humidity	66%
Wind Speed	S 3 mph
Barometer	29.96 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	98°F (37°C)
Last update	17 Aug 5:50 pm CDT

More Information:

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

Extended Forecast for

Cartwright OK

Heat Advisory August 18, 12:00pm until August 18, 08:00pm

Heat Advisory until August 17, 08:00pm

Click here for hazard details and duration

Heat Advisory

...

Heat Advisory until August 17, 08:00pm
NOW until 8:00pm Sun
Heat Advisory
Tonight
Low: 79 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 96 °F
Sunny then
Slight Chance
T-storms
Monday Night
Low: 79 °F
Mostly Clear
Tuesday
High: 97 °F
Hot
Tuesday Night
Low: 78 °F
Mostly Clear
then Slight
Chance
T-storms
Wednesday
High: 94 °F
Chance
T-storms
Wednesday Night
Low: 75 °F
Chance
T-storms
Thursday
High: 92 °F
Chance
Showers

Detailed Forecast

Tonight

A 20 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 79. South southeast wind around 6 mph.

Monday

A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 96. Heat index values as high as 105. South southeast wind around 5 mph becoming light and variable in the morning.

Monday Night

Mostly clear, with a low around 79. Light and variable wind.

Tuesday

Sunny and hot, with a high near 97. Heat index values as high as 105. Calm wind.

Tuesday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 78. Calm wind.

Wednesday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94.

Wednesday Night

A chance of showers and thunderstorms. Mostly clear, with a low around 75. Chance of precipitation is 30%.

Thursday

A chance of showers, with thunderstorms also possible after 1pm. Sunny, with a high near 92. Chance of precipitation is 30%.