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 >

Hazardous Weather Conditions

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

Webster SD

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

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Christmas Day

    High: 38 °F

    Dense
    Freezing Fog
    and Patchy
    Fog then
    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of drizzle between 8pm and 9pm. Mostly cloudy, with a low around 24. South wind 7 to 13 mph becoming north northwest after midnight. Winds could gust as high as 24 mph.

    Low: 24 °F

    Slight Chance
    Drizzle then
    Mostly Cloudy

  • Friday

    Friday: Patchy fog between 8am and 11am. Otherwise, partly sunny, with a high near 35. North northwest wind 5 to 7 mph becoming south southeast in the afternoon.

    High: 35 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 31. South southeast wind 7 to 10 mph.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 41. South southwest wind around 10 mph becoming northwest in the afternoon.

    High: 41 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow after midnight. Mostly cloudy, with a low around 8. Blustery, with a north northwest wind 10 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

    Low: 8 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    and Blustery

  • Sunday

    Sunday: A slight chance of snow before noon. Mostly cloudy, with a high near 12. Blustery, with a northwest wind 21 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.

    High: 12 °F

    Blustery.
    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 0. Blustery, with a northwest wind 14 to 22 mph, with gusts as high as 36 mph.

    Low: 0 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

Detailed Forecast

Christmas Day
Patchy fog between 11am and noon. Widespread dense freezing fog between 8am and 11am. Otherwise, cloudy, with a high near 38. South wind 14 to 18 mph, with gusts as high as 30 mph.
Tonight
A slight chance of drizzle between 8pm and 9pm. Mostly cloudy, with a low around 24. South wind 7 to 13 mph becoming north northwest after midnight. Winds could gust as high as 24 mph.
Friday
Patchy fog between 8am and 11am. Otherwise, partly sunny, with a high near 35. North northwest wind 5 to 7 mph becoming south southeast in the afternoon.
Friday Night
Mostly cloudy, with a low around 31. South southeast wind 7 to 10 mph.
Saturday
Mostly sunny, with a high near 41. South southwest wind around 10 mph becoming northwest in the afternoon.
Saturday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 8. Blustery, with a north northwest wind 10 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Sunday
A slight chance of snow before noon. Mostly cloudy, with a high near 12. Blustery, with a northwest wind 21 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 0. Blustery, with a northwest wind 14 to 22 mph, with gusts as high as 36 mph.
Monday
Sunny, with a high near 14. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.
Monday Night
Mostly cloudy, with a low around 6.
Tuesday
Partly sunny, with a high near 31.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 10. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 21.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Webster SD
 45.33°N 97.52°W (Elev. 1831 ft)
Last Update:
5:36 am CST Dec 25, 2025
Forecast Valid:
6am CST Dec 25, 2025-6pm CST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation