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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

66°F

19°C

Humidity 81%
Wind Speed S 12 mph
Barometer 30.17 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 24 Dec 9:55 pm CST
Extended Forecast for

4 Miles WSW Collinsville TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. South southwest wind around 5 mph.

    Low: 60 °F

    Mostly Cloudy

  • Christmas Day

    Christmas Day: Mostly cloudy, then gradually becoming sunny, with a high near 80. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63. South wind 5 to 10 mph.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 83. West southwest wind 5 to 10 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. South wind around 5 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 82. South southwest wind 5 to 10 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 64. South southwest wind 5 to 10 mph.

    Low: 64 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 72. South southwest wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 72 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33. North wind around 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 60. South southwest wind around 5 mph.
Christmas Day
Mostly cloudy, then gradually becoming sunny, with a high near 80. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 63. South wind 5 to 10 mph.
Friday
Sunny, with a high near 83. West southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 60. South wind around 5 mph.
Saturday
Mostly sunny, with a high near 82. South southwest wind 5 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 64. South southwest wind 5 to 10 mph.
Sunday
Mostly cloudy, with a high near 72. South southwest wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 33. North wind around 15 mph, with gusts as high as 25 mph.
Monday
Mostly cloudy, with a high near 44.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Mostly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Collinsville TX
 33.52°N 96.98°W (Elev. 686 ft)
Last Update:
5:06 pm CST Dec 24, 2025
Forecast Valid:
10pm CST Dec 24, 2025-6pm CST Dec 31, 2025
 
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