Widespread Showers in the Eastern US; Severe Thunderstorms in the Plains; Heatwave in the Desert Southwest

Widespread showers and thunderstorms across much of the central and eastern U.S. will produce areas of excessive rainfall, especially in the southern Mid-Atlantic states. Scattered severe thunderstorms are expected from Montana into portions of the central/southern Plains this weekend. A heatwave will build in the Desert Southwest, in parts of Arizona, southeastern California, and southern Nevada. 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

Grayson County Airport TX

Overnight
Low: 76 °F
Partly Cloudy
Sunday
High: 87 °F
T-storms
Likely
Sunday Night
Low: 72 °F
Partly Cloudy
then Slight
Chance
T-storms
Monday
High: 90 °F
Slight Chance
T-storms
Monday Night
Low: 76 °F
Mostly Clear
Tuesday
High: 92 °F
Sunny
Tuesday Night
Low: 76 °F
Mostly Clear
Wednesday
High: 91 °F
Mostly Sunny
Wednesday Night
Low: 73 °F
Chance
T-storms

Detailed Forecast

Overnight

Partly cloudy, with a steady temperature around 76. South wind around 5 mph.

Sunday

Showers and thunderstorms likely, mainly before 1pm. Partly sunny, with a high near 87. South wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. East northeast wind around 5 mph becoming south after midnight.

Monday

A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Heat index values as high as 101. South wind 5 to 10 mph.

Monday Night

Mostly clear, with a low around 76. South southeast wind around 10 mph.

Tuesday

Sunny, with a high near 92. South wind 10 to 15 mph, with gusts as high as 25 mph.

Tuesday Night

Mostly clear, with a low around 76. South wind around 15 mph, with gusts as high as 25 mph.

Wednesday

Mostly sunny, with a high near 91. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Wednesday Night

A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 73. South wind 5 to 10 mph.

Juneteenth

Mostly sunny, with a high near 90.