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

Pierre, Pierre Regional Airport (KPIR)

Lat: 44.38°NLon: 100.29°WElev: 1742ft.

Partly Cloudy

29°F

-2°C

Humidity 100%
Wind Speed W 3 mph
Barometer 29.81 in (1010.6 mb)
Dewpoint 29°F (-2°C)
Visibility 9.00 mi
Last update 26 Dec 3:53 am CST
Extended Forecast for

Mission Ridge SD

  • Today

    Today: Areas of fog before 7am, then areas of fog after 10am. Areas of freezing fog between 7am and 10am. 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

  • Tonight

    Tonight: Patchy fog between 8pm and 10pm. Otherwise, mostly cloudy, with a low around 33. South southeast wind 7 to 10 mph becoming west after midnight.

    Low: 33 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 45. West southwest wind 7 to 11 mph becoming north in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow after midnight. Mostly cloudy, with a low around 10. Windy, with a north northwest wind 13 to 18 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 20%.

    Low: 10 °F

    Mostly Cloudy
    and Blustery
    then Slight
    Chance Snow
    and Windy

  • Sunday

    Sunday: Mostly sunny, with a high near 15. Windy, with a northwest wind 26 to 30 mph, with gusts as high as 39 mph.

    High: 15 °F

    Mostly Sunny
    and Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 4. Blustery, with a north northwest wind 19 to 24 mph decreasing to 13 to 18 mph after midnight. Winds could gust as high as 33 mph.

    Low: 4 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 25. Northwest wind 8 to 11 mph becoming southwest in the afternoon.

    High: 25 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 20. West wind 8 to 14 mph.

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 41. West northwest wind 11 to 17 mph, with gusts as high as 25 mph.

    High: 41 °F

    Partly Sunny

Detailed Forecast

Today
Areas of fog before 7am, then areas of fog after 10am. Areas of freezing fog between 7am and 10am. Otherwise, partly sunny, with a high near 45. Calm wind becoming southeast 5 to 8 mph in the morning.
Tonight
Patchy fog between 8pm and 10pm. Otherwise, mostly cloudy, with a low around 33. South southeast wind 7 to 10 mph becoming west after midnight.
Saturday
Mostly sunny, with a high near 45. West southwest wind 7 to 11 mph becoming north in the afternoon.
Saturday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 10. Windy, with a north northwest wind 13 to 18 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 15. Windy, with a northwest wind 26 to 30 mph, with gusts as high as 39 mph.
Sunday Night
Mostly clear, with a low around 4. Blustery, with a north northwest wind 19 to 24 mph decreasing to 13 to 18 mph after midnight. Winds could gust as high as 33 mph.
Monday
Sunny, with a high near 25. Northwest wind 8 to 11 mph becoming southwest in the afternoon.
Monday Night
Partly cloudy, with a low around 20. West wind 8 to 14 mph.
Tuesday
Partly sunny, with a high near 41. West northwest wind 11 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 15. Chance of precipitation is 20%.
Wednesday
A slight chance of snow. Partly sunny, with a high near 27. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 10.
New Year's Day
Partly sunny, with a high near 22.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mission Ridge SD
 44.7°N 100.76°W (Elev. 1900 ft)
Last Update:
3:36 am CST Dec 26, 2025
Forecast Valid:
4am CST Dec 26, 2025-6pm CST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation