Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

36°F

2°C

Humidity 93%
Wind Speed E 6 mph
Barometer 29.84 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 10 Dec 1:35 pm MST
Extended Forecast for

5 Miles S Lead SD

  • This Afternoon

    This Afternoon: A chance of snow before 3pm, then snow likely, possibly mixed with sleet between 3pm and 4pm, then rain, possibly mixed with snow after 4pm.  High near 41. Light and variable wind becoming west 5 to 9 mph. Winds could gust as high as 23 mph.  Chance of precipitation is 80%. Little or no snow and sleet accumulation expected.

    High: 41 °F

    Wintry Mix

  • Tonight

    Tonight: Rain, mainly before 2am.  Temperature rising to around 38 by 11pm. West wind around 11 mph, with gusts as high as 30 mph.  Chance of precipitation is 80%.

    Low: 34 °F

    Rain

  • Thursday

    Thursday: Rain likely before 4pm, then rain, possibly mixed with snow.  Temperature rising to near 44 by noon, then falling to around 34 during the remainder of the day. West wind 10 to 14 mph, with gusts as high as 36 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Rain Likely
    then
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow, possibly mixed with rain, becoming all snow after 7pm.  Low around 15. Wind chill values as low as 8. Northwest wind 6 to 14 mph, with gusts as high as 32 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 15 °F

    Rain/Snow
    then Snow
    Likely

  • Friday

    Friday: Snow.  High near 20. North wind 3 to 5 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 20 °F

    Snow

  • Friday Night

    Friday Night: Snow likely.  Mostly cloudy, with a steady temperature around 18. Calm wind becoming west around 5 mph after midnight.  Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 18 °F

    Snow Likely

  • Saturday

    Saturday: A 50 percent chance of snow, mainly before 11am.  Partly sunny, with a high near 24. Northwest wind around 6 mph becoming calm  in the afternoon. Winds could gust as high as 16 mph.

    High: 24 °F

    Chance Snow
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 13. Southwest wind 3 to 6 mph. Winds could gust as high as 16 mph.

    Low: 13 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of snow before 3pm, then snow likely, possibly mixed with sleet between 3pm and 4pm, then rain, possibly mixed with snow after 4pm. High near 41. Light and variable wind becoming west 5 to 9 mph. Winds could gust as high as 23 mph. Chance of precipitation is 80%. Little or no snow and sleet accumulation expected.
Tonight
Rain, mainly before 2am. Temperature rising to around 38 by 11pm. West wind around 11 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Thursday
Rain likely before 4pm, then rain, possibly mixed with snow. Temperature rising to near 44 by noon, then falling to around 34 during the remainder of the day. West wind 10 to 14 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow, possibly mixed with rain, becoming all snow after 7pm. Low around 15. Wind chill values as low as 8. Northwest wind 6 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday
Snow. High near 20. North wind 3 to 5 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow likely. Mostly cloudy, with a steady temperature around 18. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Saturday
A 50 percent chance of snow, mainly before 11am. Partly sunny, with a high near 24. Northwest wind around 6 mph becoming calm in the afternoon. Winds could gust as high as 16 mph.
Saturday Night
Partly cloudy, with a low around 13. Southwest wind 3 to 6 mph. Winds could gust as high as 16 mph.
Sunday
Sunny, with a high near 48.
Sunday Night
Mostly clear, with a low around 29.
Monday
Mostly sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Lead SD
 44.29°N 103.77°W (Elev. 6030 ft)
1:26 pm MST Dec 10, 2025
1pm MST Dec 10, 2025-6pm MST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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