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Heavy Rain and Flooding in the Southern Plains to the Great Lakes

Several days of heavy rainfall will lead to flash flooding and river flooding from the Southern Plains to the Southern Great Lakes. A band of freezing rain is forecast across portions of the Southern Plains into the Middle Mississippi Valley. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Unknown Precip

N/A

Humidity NA
Wind Speed NE 3 mph
Barometer 30.25 in
Dewpoint N/A
Visibility 0.25 mi
Last update 21 Feb 4:15 pm CST
Extended Forecast for

Denison TX

Flood Watch until February 22, 12:00am
Winter Weather Advisory until February 22, 12:00pm
Click here for hazard details and duration
Flood Watch
Winter Weather Advisory
  •  
    Flood Watch until February 22, 12:00am
    Winter Weather Advisory until February 22, 12:00pm

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • This
    Afternoon

    This Afternoon: Showers and thunderstorms. Some of the storms could produce heavy rain.  High near 35. North wind around 10 mph.  Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Heavy Rain

    High: 35 °F

  • Tonight

    Tonight: Freezing rain and sleet likely before midnight, then a slight chance of freezing drizzle. Some thunder is also possible.  Cloudy, with a low around 32. North wind 5 to 10 mph.  Chance of precipitation is 60%. Little or no ice accumulation expected.

    Wintry Mix
    Likely then
    Slight Chance
    Freezing
    Drizzle

    Low: 32 °F

  • Thursday

    Thursday: Showers, with thunderstorms also possible after noon.  High near 46. North wind around 5 mph becoming calm  in the afternoon.  Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Showers

    High: 46 °F

  • Thursday
    Night

    Thursday Night: A 50 percent chance of rain and thunderstorms.  Cloudy, with a low around 40. Calm wind becoming west northwest around 5 mph.

    Chance Rain

    Low: 40 °F

  • Friday

    Friday: Showers and thunderstorms.  High near 54. Calm wind becoming northeast around 5 mph in the afternoon.  Chance of precipitation is 80%.

    T-storms

    High: 54 °F

  • Friday
    Night

    Friday Night: Showers and thunderstorms likely.  Cloudy, with a temperature falling to near 52 by 8pm, then rising to around 57 during the remainder of the night. East wind 5 to 10 mph becoming south after midnight.  Chance of precipitation is 70%.

    T-storms
    Likely

    Low: 52 °F

  • Saturday

    Saturday: Showers and thunderstorms.  High near 63. South wind 10 to 20 mph becoming west in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 80%.

    T-storms

    High: 63 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 39. West wind 5 to 10 mph becoming northeast after midnight.

    Mostly Clear

    Low: 39 °F

Detailed Forecast

This Afternoon
Showers and thunderstorms. Some of the storms could produce heavy rain. High near 35. North wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Freezing rain and sleet likely before midnight, then a slight chance of freezing drizzle. Some thunder is also possible. Cloudy, with a low around 32. North wind 5 to 10 mph. Chance of precipitation is 60%. Little or no ice accumulation expected.
Thursday
Showers, with thunderstorms also possible after noon. High near 46. North wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 50 percent chance of rain and thunderstorms. Cloudy, with a low around 40. Calm wind becoming west northwest around 5 mph.
Friday
Showers and thunderstorms. High near 54. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms likely. Cloudy, with a temperature falling to near 52 by 8pm, then rising to around 57 during the remainder of the night. East wind 5 to 10 mph becoming south after midnight. Chance of precipitation is 70%.
Saturday
Showers and thunderstorms. High near 63. South wind 10 to 20 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Saturday Night
Mostly clear, with a low around 39. West wind 5 to 10 mph becoming northeast after midnight.
Sunday
Sunny, with a high near 62. Northeast wind around 5 mph becoming south southeast in the afternoon.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Partly sunny, with a high near 64.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Wednesday
A 40 percent chance of showers and thunderstorms. Cloudy, with a high near 64.
Click Map For Forecast
Point Forecast:
Denison TX
 33.75°N 96.57°W (Elev. 748 ft)
3:36 pm CST Feb 21, 2018
5pm CST Feb 21, 2018-6pm CST Feb 28, 2018
 
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