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.

Fog/Mist

28°F

-2°C

Humidity 100%
Wind Speed N 8 mph
Barometer 29.81 in
Dewpoint 28°F (-2°C)
Visibility 5.00 mi
Wind Chill20°F (-7°C)
Last update 26 Dec 3:35 am CST
Extended Forecast for

17 Miles WSW Onida SD

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 7am, then areas of fog after 11am. Areas of freezing fog between 7am and 11am.  Otherwise, partly sunny, with a high near 45. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 45 °F

    Areas
    Freezing Fog
    and Areas Fog

  • Friday Night

    Friday Night: Patchy fog before 11pm.  Otherwise, mostly cloudy, with a low around 31. Southeast wind 6 to 8 mph becoming west after midnight.

    Low: 31 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 46. West southwest wind 6 to 9 mph becoming north in the afternoon.

    High: 46 °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 10 to 15 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 37 mph.  Chance of precipitation is 20%.

    Low: 9 °F

    Blustery.
    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 15. Blustery, with a northwest wind 23 to 26 mph, with gusts as high as 38 mph.

    High: 15 °F

    Mostly Sunny
    and Blustery

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 3. Blustery, with a north northwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 33 mph.

    Low: 3 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 25. Northwest wind 8 to 10 mph becoming southwest in the afternoon.

    High: 25 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17. West wind 7 to 10 mph.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 26. Calm wind.
Friday
Areas of fog before 7am, then areas of fog after 11am. Areas of freezing fog between 7am and 11am. Otherwise, partly sunny, with a high near 45. Calm wind becoming southeast 5 to 8 mph in the morning.
Friday Night
Patchy fog before 11pm. Otherwise, mostly cloudy, with a low around 31. Southeast wind 6 to 8 mph becoming west after midnight.
Saturday
Mostly sunny, with a high near 46. West southwest wind 6 to 9 mph becoming north 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 10 to 15 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 15. Blustery, with a northwest wind 23 to 26 mph, with gusts as high as 38 mph.
Sunday Night
Mostly clear, with a low around 3. Blustery, with a north northwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 33 mph.
Monday
Sunny, with a high near 25. Northwest wind 8 to 10 mph becoming southwest in the afternoon.
Monday Night
Partly cloudy, with a low around 17. West wind 7 to 10 mph.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 13. Chance of precipitation is 20%.
Wednesday
A slight chance of snow. Partly sunny, with a high near 26. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 8.
New Year's Day
Partly sunny, with a high near 21.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles WSW Onida SD
 44.65°N 100.39°W (Elev. 1781 ft)
3:36 am CST Dec 26, 2025
3am CST Dec 26, 2025-6pm CST Jan 1, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database