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

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Unknown Precip Freezing Fog

28°F

-2°C

Humidity 100%
Wind Speed NA
Barometer 29.90 in
Dewpoint 28°F (-2°C)
Visibility 0.15 mi
Last update 25 Dec 4:55 am CST
Extended Forecast for

Highmore 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

  • Overnight

    Low: 25 °F

    Areas Dense
    Freezing Fog

  • Christmas Day

    Christmas Day: Widespread dense fog between 8am and 11am. Widespread dense freezing fog before 8am. Otherwise, mostly cloudy, with a high near 50. South wind 9 to 18 mph, with gusts as high as 29 mph.

    High: 50 °F

    Dense
    Freezing Fog
    and Dense Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. South southwest wind 5 to 9 mph becoming west northwest in the evening.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 45. Light and variable wind becoming south southeast 5 to 7 mph in the morning.

    High: 45 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 34. South southeast wind 10 to 14 mph becoming southwest after midnight.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 49. West southwest wind 11 to 14 mph becoming north northwest in the afternoon.

    High: 49 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow after midnight. Mostly cloudy, with a low around 9. Blustery, with a north northwest wind 14 to 19 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.

    Low: 9 °F

    Blustery.
    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A slight chance of snow before noon. Mostly sunny, with a high near 15. Windy, with a northwest wind 24 to 31 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.

    High: 15 °F

    Windy. Slight
    Chance Snow
    then Mostly
    Sunny

Detailed Forecast

Overnight
Areas of dense freezing fog. Cloudy, with a low around 25. Southeast wind around 10 mph.
Christmas Day
Widespread dense fog between 8am and 11am. Widespread dense freezing fog before 8am. Otherwise, mostly cloudy, with a high near 50. South wind 9 to 18 mph, with gusts as high as 29 mph.
Thursday Night
Partly cloudy, with a low around 28. South southwest wind 5 to 9 mph becoming west northwest in the evening.
Friday
Mostly sunny, with a high near 45. Light and variable wind becoming south southeast 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 34. South southeast wind 10 to 14 mph becoming southwest after midnight.
Saturday
Mostly sunny, with a high near 49. West southwest wind 11 to 14 mph becoming north northwest in the afternoon.
Saturday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 9. Blustery, with a north northwest wind 14 to 19 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.
Sunday
A slight chance of snow before noon. Mostly sunny, with a high near 15. Windy, with a northwest wind 24 to 31 mph, with gusts as high as 41 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 2. Blustery, with a northwest wind 15 to 22 mph, with gusts as high as 31 mph.
Monday
Sunny, with a high near 22.
Monday Night
Mostly cloudy, with a low around 13.
Tuesday
Mostly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 15.
Wednesday
Partly sunny, with a high near 30.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Highmore SD
 44.55°N 99.45°W (Elev. 1837 ft)
Last Update:
4:36 am CST Dec 25, 2025
Forecast Valid:
5am 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