National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Southern U.S. Severe Thunderstorm and Flash Flood Threat Sunday; Fire Weather in the West

Isolated to scattered severe thunderstorms may occur Sunday from parts of central and east Texas into the lower Mississippi Valley and Mid-South. Locally heavy rain may cause flash flooding in the lower Mississippi Valley. Elevated to critical fire weather conditions are forecast across parts of northern California and the Southwest again Sunday and Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Overcast

75°F

24°C

Humidity 78%
Wind Speed S 15 mph
Barometer 29.79 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 9 May 8:50 am CDT
Extended Forecast for

Sherman TX

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 67 by noon. West southwest wind 15 to 20 mph becoming north northeast in the afternoon. Winds could gust as high as 25 mph.

    Decreasing
    Clouds

    High: 74 °F⇓

  • Tonight

    Tonight: A 10 percent chance of showers after 5am. Increasing clouds, with a low around 53. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Partly Cloudy
    then Slight
    Chance
    Showers

    Low: 53 °F

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 7am. Cloudy, with a high near 63. Northeast wind 10 to 15 mph.

    Chance
    Showers then
    Chance
    T-storms

    High: 63 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Northeast wind around 10 mph.

    Chance
    T-storms

    Low: 55 °F

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 63. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Showers

    High: 63 °F

  • Tuesday
    Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. East northeast wind around 10 mph, with gusts as high as 20 mph.

    Chance
    T-storms

    Low: 55 °F

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers. Mostly cloudy, with a high near 65. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Chance
    T-storms

    High: 65 °F

  • Wednesday
    Night

    Wednesday Night: Mostly cloudy, with a low around 51. Northeast wind 5 to 10 mph.

    Mostly Cloudy

    Low: 51 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 71. Northeast wind 5 to 10 mph.

    Mostly Sunny

    High: 71 °F

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 67 by noon. West southwest wind 15 to 20 mph becoming north northeast in the afternoon. Winds could gust as high as 25 mph.
Tonight
A 10 percent chance of showers after 5am. Increasing clouds, with a low around 53. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 7am. Cloudy, with a high near 63. Northeast wind 10 to 15 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Northeast wind around 10 mph.
Tuesday
Showers and possibly a thunderstorm. High near 63. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. East northeast wind around 10 mph, with gusts as high as 20 mph.
Wednesday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers. Mostly cloudy, with a high near 65. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 51. Northeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 71. Northeast wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 61.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Sherman TX
 33.64°N 96.6°W (Elev. 732 ft)
Last Update:
5:35 am CDT May 9, 2021
Forecast Valid:
9am CDT May 9, 2021-6pm CDT May 15, 2021
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation