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

BRITTON (KBTN)

Lat: 45.82°NLon: 97.74°WElev: 1318ft.

Fog/Mist

19°F

-7°C

Humidity 100%
Wind Speed NE 15 mph
Barometer 30.16 in
Dewpoint 19°F (-7°C)
Visibility 4.00 mi
Wind Chill5°F (-15°C)
Last update 24 Dec 8:55 pm CST
Extended Forecast for

Lake City 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: 18 °F

    Patchy Dense
    Fog

  • Christmas Day

    Christmas Day: Patchy dense fog. Otherwise, mostly cloudy, with a high near 35. South southeast wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 35 °F

    Patchy Dense
    Fog

  • Thursday Night

    Thursday Night: A slight chance of drizzle before midnight, then a slight chance of drizzle or freezing rain between midnight and 1am, then a slight chance of freezing rain after 1am. Patchy fog before 5am. Otherwise, mostly cloudy, with a low around 25. South wind 6 to 10 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Drizzle/Freezing
    Rain and
    Patchy Fog

  • Friday

    Friday: Partly sunny, with a high near 33. Northwest wind around 7 mph becoming south in the afternoon.

    High: 33 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28. South wind 6 to 9 mph.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 38. South southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 38 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow, mainly after midnight. Mostly cloudy, with a low around 5. Blustery, with a northwest wind 11 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.

    Low: 5 °F

    Chance Snow
    and Blustery

  • Sunday

    Sunday: A slight chance of snow before noon. Partly sunny, with a high near 11. Blustery, with a northwest wind 22 to 24 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.

    High: 11 °F

    Blustery.
    Slight Chance
    Snow then
    Partly Sunny

Detailed Forecast

Tonight
Patchy dense fog. Otherwise, mostly cloudy, with a low around 18. East northeast wind 8 to 10 mph.
Christmas Day
Patchy dense fog. Otherwise, mostly cloudy, with a high near 35. South southeast wind 10 to 16 mph, with gusts as high as 28 mph.
Thursday Night
A slight chance of drizzle before midnight, then a slight chance of drizzle or freezing rain between midnight and 1am, then a slight chance of freezing rain after 1am. Patchy fog before 5am. Otherwise, mostly cloudy, with a low around 25. South wind 6 to 10 mph becoming northwest after midnight. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 33. Northwest wind around 7 mph becoming south in the afternoon.
Friday Night
Partly cloudy, with a low around 28. South wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 38. South southwest wind around 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A chance of snow, mainly after midnight. Mostly cloudy, with a low around 5. Blustery, with a northwest wind 11 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 30%.
Sunday
A slight chance of snow before noon. Partly sunny, with a high near 11. Blustery, with a northwest wind 22 to 24 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around -2. Blustery, with a northwest wind 13 to 22 mph, with gusts as high as 34 mph.
Monday
Mostly sunny, with a high near 14.
Monday Night
Mostly cloudy, with a low around 6.
Tuesday
Mostly cloudy, with a high near 30.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 5. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 15.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake City SD
 45.72°N 97.41°W (Elev. 1890 ft)
Last Update:
8:51 pm CST Dec 24, 2025
Forecast Valid:
9pm CST Dec 24, 2025-6pm CST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation