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A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

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Severe weather possible for parts of Midwest, New England

There is a Slight Risk of severe thunderstorms Tuesday afternoon and evening across parts of the Midwest, from eastern Nebraska across northern Missouri and much of Iowa and into extreme western Illinois. A Marginal Risk of severe thunderstorms extends from southwestern Kansas to northern Minnesota and Lake Superior, as well as across parts of New England.
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Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

98°F

37°C

Humidity 36%
Wind Speed S 13 G 17 mph
Barometer 29.95 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 28 Jul 4:35 pm CDT
Extended Forecast for

Grayson County Airport TX

Heat Advisory until Wednesday 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until Wednesday 07:00pm

    NOW until
    7:00pm Wed

    Heat Advisory

  • This
    Afternoon

    This Afternoon: Sunny, with a high near 98. Heat index values as high as 104. South wind around 10 mph.

    Sunny

    High: 98 °F

  • Tonight

    Tonight: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Mostly Clear

    Low: 76 °F

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. Heat index values as high as 102. South southeast wind around 5 mph.

    Hot

    High: 99 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm  in the evening.

    Mostly Clear

    Low: 76 °F

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 98. Calm wind becoming northeast around 5 mph in the morning.

    Slight Chance
    T-storms

    High: 98 °F

  • Thursday
    Night

    Thursday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 73. Northeast wind around 5 mph.

    Slight Chance
    T-storms

    Low: 73 °F

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 95. Northeast wind 5 to 10 mph.

    Slight Chance
    T-storms

    High: 95 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 72. Northeast wind around 5 mph.

    Partly Cloudy

    Low: 72 °F

Detailed Forecast

This Afternoon
Sunny, with a high near 98. Heat index values as high as 104. South wind around 10 mph.
Tonight
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 99. Heat index values as high as 102. South southeast wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 98. Calm wind becoming northeast around 5 mph in the morning.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Northeast wind around 5 mph.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Northeast wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 72. Northeast wind around 5 mph.
Saturday
Mostly sunny, with a high near 95. East wind around 5 mph.
Saturday Night
Mostly clear, with a low around 72.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 73.
Monday
Mostly sunny and hot, with a high near 99.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
Mostly sunny and hot, with a high near 99.
Click Map For Forecast
Point Forecast:
Grayson County Airport TX
 33.73°N 96.68°W (Elev. 715 ft)
3:06 pm CDT Jul 28, 2015
4pm CDT Jul 28, 2015-6pm CDT Aug 4, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database