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

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

3 Miles S Webster SD

Dense Fog Advisory until December 25, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until December 25, 10:00am

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Tonight

    Low: 21 °F

    Areas
    Freezing Fog
    and Patchy
    Fog

  • Christmas Day

    Christmas Day: Patchy fog.  Otherwise, mostly cloudy, with a high near 37. East southeast wind 13 to 17 mph becoming south in the afternoon. Winds could gust as high as 29 mph.

    High: 37 °F

    Patchy Fog

  • Thursday Night

    Thursday Night: A slight chance of freezing rain after 5am.  Areas of fog between 2am and 5am. Areas of freezing fog between 1am and 2am.  Otherwise, mostly cloudy, with a low around 26. South wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 21 mph.  Chance of precipitation is 10%.

    Low: 26 °F

    Slight Chance
    Freezing Rain
    and Areas
    Freezing Fog

  • Friday

    Friday: Partly sunny, with a high near 35. Northwest wind around 7 mph becoming south in the afternoon.

    High: 35 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. South wind 7 to 9 mph.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 43. South southwest wind 9 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 43 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow after midnight.  Mostly cloudy, with a low around 7. Blustery, with a north northwest wind 11 to 21 mph, with gusts as high as 34 mph.  Chance of precipitation is 20%.

    Low: 7 °F

    Partly Cloudy
    then Slight
    Chance Snow
    and Blustery

  • Sunday

    Sunday: Partly sunny, with a high near 13. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 40 mph.

    High: 13 °F

    Partly Sunny
    and Blustery

Detailed Forecast

Tonight
Patchy fog after midnight. Areas of freezing fog between 11pm and midnight. Otherwise, mostly cloudy, with a low around 21. East wind 9 to 11 mph, with gusts as high as 20 mph.
Christmas Day
Patchy fog. Otherwise, mostly cloudy, with a high near 37. East southeast wind 13 to 17 mph becoming south in the afternoon. Winds could gust as high as 29 mph.
Thursday Night
A slight chance of freezing rain after 5am. Areas of fog between 2am and 5am. Areas of freezing fog between 1am and 2am. Otherwise, mostly cloudy, with a low around 26. South wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 10%.
Friday
Partly sunny, with a high near 35. Northwest wind around 7 mph becoming south in the afternoon.
Friday Night
Partly cloudy, with a low around 30. South wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 43. South southwest wind 9 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 7. Blustery, with a north northwest wind 11 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Sunday
Partly sunny, with a high near 13. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 40 mph.
Sunday Night
Partly cloudy, with a low around -1. Blustery, with a northwest wind 13 to 21 mph, with gusts as high as 34 mph.
Monday
Mostly sunny, with a high near 15.
Monday Night
Mostly cloudy, with a low around 7.
Tuesday
Mostly cloudy, with a high near 31.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 7. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 18.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Webster SD
 45.29°N 97.52°W (Elev. 1824 ft)
8:36 pm CST Dec 24, 2025
8pm CST Dec 24, 2025-6pm CST Dec 31, 2025
 
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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