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

Mobridge, Mobridge Municipal Airport (KMBG)

Lat: 45.55°NLon: 100.41°WElev: 1713ft.

Fog/Mist

32°F

0°C

Humidity 100%
Wind Speed SE 10 mph
Barometer 29.69 in (1007.6 mb)
Dewpoint 32°F (0°C)
Visibility 6.00 mi
Wind Chill24°F (-4°C)
Last update 25 Dec 10:52 am CST
Extended Forecast for

Eureka SD

Dense Fog Advisory December 25, 11:15am until December 25, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 25, 11:15am until December 25, 12:00pm

    NOW until 12:00pm Thu

    Dense Fog Advisory

  • Christmas Day

    High: 36 °F

    Dense
    Freezing Fog
    and Dense Fog

  • Tonight

    Tonight: A slight chance of drizzle or freezing rain between 8pm and 9pm. Patchy fog after 5am. Widespread freezing fog between 4am and 5am. Otherwise, mostly cloudy, with a low around 21. West southwest wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 21 °F

    Slight Chance
    Drizzle/Freezing
    Rain and
    Freezing Fog

  • Friday

    Friday: Patchy fog before 2pm. Otherwise, mostly sunny, with a high near 35. Northwest wind 5 to 9 mph becoming southeast in the morning.

    High: 35 °F

    Patchy Fog

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27. South southeast wind around 11 mph becoming west southwest after midnight.

    Low: 27 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 40. West southwest wind 9 to 15 mph becoming north northwest in the afternoon.

    High: 40 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow after midnight. Mostly cloudy, with a low around 4. Windy, with a north northwest wind 16 to 21 mph increasing to 25 to 30 mph after midnight. Chance of precipitation is 20%.

    Low: 4 °F

    Mostly Cloudy
    and Blustery
    then Slight
    Chance Snow
    and Windy

  • Sunday

    Sunday: Partly sunny and cold, with a high near 9. Windy, with a northwest wind 26 to 30 mph, with gusts as high as 41 mph.

    High: 9 °F

    Cold and
    Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -2. Blustery, with a northwest wind 15 to 24 mph, with gusts as high as 32 mph.

    Low: -2 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

Detailed Forecast

Christmas Day
Widespread dense fog between noon and 5pm. Widespread dense freezing fog before noon. Otherwise, cloudy, with a high near 36. South southeast wind 6 to 13 mph.
Tonight
A slight chance of drizzle or freezing rain between 8pm and 9pm. Patchy fog after 5am. Widespread freezing fog between 4am and 5am. Otherwise, mostly cloudy, with a low around 21. West southwest wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 20%.
Friday
Patchy fog before 2pm. Otherwise, mostly sunny, with a high near 35. Northwest wind 5 to 9 mph becoming southeast in the morning.
Friday Night
Partly cloudy, with a low around 27. South southeast wind around 11 mph becoming west southwest after midnight.
Saturday
Mostly sunny, with a high near 40. West southwest wind 9 to 15 mph becoming north northwest in the afternoon.
Saturday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 4. Windy, with a north northwest wind 16 to 21 mph increasing to 25 to 30 mph after midnight. Chance of precipitation is 20%.
Sunday
Partly sunny and cold, with a high near 9. Windy, with a northwest wind 26 to 30 mph, with gusts as high as 41 mph.
Sunday Night
Mostly clear, with a low around -2. Blustery, with a northwest wind 15 to 24 mph, with gusts as high as 32 mph.
Monday
Sunny, with a high near 19. Northwest wind 10 to 14 mph becoming west southwest in the afternoon.
Monday Night
Mostly cloudy, with a low around 10.
Tuesday
Partly sunny, with a high near 34.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 11. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Eureka SD
 45.76°N 99.63°W (Elev. 1883 ft)
Last Update:
10:36 am CST Dec 25, 2025
Forecast Valid:
11am CST Dec 25, 2025-6pm CST Dec 31, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation