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.

Fair

29°F

-2°C

Humidity 96%
Wind Speed Calm
Barometer 29.80 in (1010.4 mb)
Dewpoint 28°F (-2°C)
Visibility 9.00 mi
Last update 26 Dec 2:53 am CST
Extended Forecast for

Pierre SD

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog between 10am and 1pm. Areas of freezing fog between 7am and 10am. Otherwise, partly sunny, with a high near 48. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 48 °F

    Areas
    Freezing Fog
    and Areas Fog

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. Southeast wind 6 to 9 mph becoming west southwest after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 49. Southwest wind 6 to 10 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 11. Blustery, with a north northwest wind 10 to 15 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.

    Low: 11 °F

    Blustery.
    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 17. Blustery, with a northwest wind 23 to 26 mph, with gusts as high as 39 mph.

    High: 17 °F

    Mostly Sunny
    and Blustery

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 4. 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: 4 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 26. Northwest wind 8 to 10 mph becoming southwest in the afternoon.

    High: 26 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18. West southwest wind 7 to 10 mph.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 28. Calm wind.
Friday
Areas of fog between 10am and 1pm. Areas of freezing fog between 7am and 10am. Otherwise, partly sunny, with a high near 48. Calm wind becoming southeast 5 to 8 mph in the morning.
Friday Night
Mostly cloudy, with a low around 33. Southeast wind 6 to 9 mph becoming west southwest after midnight.
Saturday
Mostly sunny, with a high near 49. Southwest wind 6 to 10 mph becoming north northwest in the afternoon.
Saturday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 11. Blustery, with a north northwest wind 10 to 15 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 17. Blustery, with a northwest wind 23 to 26 mph, with gusts as high as 39 mph.
Sunday Night
Mostly clear, with a low around 4. 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 26. Northwest wind 8 to 10 mph becoming southwest in the afternoon.
Monday Night
Partly cloudy, with a low around 18. West southwest wind 7 to 10 mph.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 15. Chance of precipitation is 20%.
Wednesday
A slight chance of snow. Partly sunny, with a high near 29. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 10.
New Year's Day
Partly sunny, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pierre SD
 44.37°N 100.32°W (Elev. 1699 ft)
Last Update:
3:16 am CST Dec 26, 2025
Forecast Valid:
3am 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