Heavy Rainfall Threat for Mid-Atlantic into Southern New England; Fire Weather Hazards for the West

Heavy rain and isolated severe thunderstorms may cause flash flooding in the northern Mid-Atlantic today. The Mid-Atlantic and Southeast heatwave is slowly easing, while cooler, drier air spreads across the Central and Eastern U.S. for the start of August. Critical fire conditions persist in the Pacific Northwest and Four Corners due to dry storms and gusty winds. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from July 31, 12:00 PM CDT until July 31, 08:00 PM CDT

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

100°F

38°C

Humidity	27%
Wind Speed	N 9 mph
Barometer	30.00 in
Dewpoint	61°F (16°C)
Visibility	10.00 mi
Heat Index	101°F (38°C)
Last update	31 Jul 3:50 pm CDT

More Information:

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

Extended Forecast for

Sherman TX

Heat Advisory until July 31, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory until July 31, 08:00pm
NOW until 8:00pm Thu
Heat Advisory
This Afternoon
High: 101 °F
Chance
T-storms
Tonight
Low: 76 °F
Chance
T-storms
Friday
High: 93 °F
Chance
T-storms
Friday Night
Low: 73 °F
Chance
T-storms
Saturday
High: 89 °F
Chance
T-storms
Saturday Night
Low: 71 °F
Mostly Clear
Sunday
High: 93 °F
Slight Chance
T-storms
Sunday Night
Low: 70 °F
Chance
T-storms

Detailed Forecast

This Afternoon

A 30 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 101. West northwest wind around 5 mph.

Tonight

A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 76. Northeast wind around 5 mph. Chance of precipitation is 30%.

Friday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 102. Northeast wind around 5 mph.

Friday Night

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. East northeast wind around 5 mph.

Saturday

A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 89. East wind around 5 mph.

Saturday Night

Mostly clear, with a low around 71. East wind around 5 mph becoming calm in the evening.

Sunday

A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 93. East southeast wind around 5 mph.

Sunday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. East wind 5 to 10 mph.

Monday

A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. East wind 5 to 10 mph.