Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

Lat: 44.05°NLon: 103.05°WElev: 3202ft.

Fair

40°F

4°C

Humidity 53%
Wind Speed W 9 mph
Barometer 29.80 in (1009.7 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 8 Dec 11:52 pm MST
Extended Forecast for

2 Miles S Rapid Valley SD

High Wind Warning December 9, 08:00am until December 10, 02:00am
Click here for hazard details and duration
High Wind Warning
  • Overnight

    Overnight: A 10 percent chance of snow after 5am.  Mostly cloudy, with a low around 34. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 11am.  Mostly sunny, with a high near 60. Windy, with a southwest wind 14 to 24 mph becoming northwest 27 to 37 mph in the afternoon. Winds could gust as high as 55 mph.

    High: 60 °F

    Chance Rain
    and Windy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 28. Wind chill values as low as 18. Windy, with a northwest wind 29 to 34 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 50 mph.

    Low: 28 °F

    Partly Cloudy
    and Windy

  • Wednesday

    Wednesday: Snow likely before noon, then rain and snow likely between noon and 2pm, then rain likely after 2pm.  Mostly cloudy, with a high near 43. Wind chill values as low as 20. Southwest wind 8 to 15 mph becoming south in the afternoon. Winds could gust as high as 24 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 43 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 11pm.  Mostly cloudy, with a low around 31. Southwest wind around 10 mph becoming northwest in the evening. Winds could gust as high as 22 mph.  Chance of precipitation is 60%.

    Low: 31 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, mainly after 5pm.  Mostly cloudy, with a high near 48. Northwest wind 10 to 17 mph, with gusts as high as 30 mph.  Chance of precipitation is 60%.

    High: 48 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain and snow likely, becoming all snow after 7pm.  Mostly cloudy, with a low around 8. North wind 14 to 17 mph, with gusts as high as 29 mph.  Chance of precipitation is 60%.

    Low: 8 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Friday

    Friday: A chance of snow.  Mostly cloudy, with a high near 19. North wind 9 to 13 mph becoming east in the afternoon. Winds could gust as high as 22 mph.

    High: 19 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 6.

    Low: 6 °F

    Chance Snow

Detailed Forecast

Overnight
A 10 percent chance of snow after 5am. Mostly cloudy, with a low around 34. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
A 30 percent chance of rain, mainly after 11am. Mostly sunny, with a high near 60. Windy, with a southwest wind 14 to 24 mph becoming northwest 27 to 37 mph in the afternoon. Winds could gust as high as 55 mph.
Tuesday Night
Partly cloudy, with a low around 28. Wind chill values as low as 18. Windy, with a northwest wind 29 to 34 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 50 mph.
Wednesday
Snow likely before noon, then rain and snow likely between noon and 2pm, then rain likely after 2pm. Mostly cloudy, with a high near 43. Wind chill values as low as 20. Southwest wind 8 to 15 mph becoming south in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 31. Southwest wind around 10 mph becoming northwest in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
Thursday
Rain likely, mainly after 5pm. Mostly cloudy, with a high near 48. Northwest wind 10 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Thursday Night
Rain and snow likely, becoming all snow after 7pm. Mostly cloudy, with a low around 8. North wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Friday
A chance of snow. Mostly cloudy, with a high near 19. North wind 9 to 13 mph becoming east in the afternoon. Winds could gust as high as 22 mph.
Friday Night
A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 6.
Saturday
A slight chance of snow before 11am. Mostly cloudy, with a high near 25.
Saturday Night
Mostly cloudy, with a low around 10.
Sunday
Mostly sunny, with a high near 44.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 44.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Rapid Valley SD
 44.04°N 103.12°W (Elev. 3071 ft)
8:21 pm MST Dec 8, 2025
12am MST Dec 9, 2025-6pm MST Dec 15, 2025
 
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Additional Resources

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Hourly Weather Forecast

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