National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast

Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Mostly Cloudy and Breezy

61°F

16°C

Humidity 44%
Wind Speed NW 22 G 30 mph
Barometer 29.62 in (1001.9 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 16 Apr 3:52 pm MDT
Extended Forecast for

Rapid City SD

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 62. Northwest wind around 14 mph, with gusts as high as 28 mph.

    High: 62 °F

    Chance
    Showers

  • Tonight

    Tonight: Rain showers before midnight, then rain and snow showers likely between midnight and 3am, then a chance of snow showers after 3am. Low around 30. Wind chill values as low as 19. Blustery, with a north wind 15 to 22 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Blustery.
    Showers then
    Rain/Snow
    Likely

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 44. Wind chill values as low as 18. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 38 mph.

    High: 44 °F

    Decreasing
    Clouds and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. Wind chill values as low as 16. Blustery, with a northwest wind 16 to 21 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 36 mph.

    Low: 25 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Saturday

    Saturday: A chance of snow showers before 2pm, then a chance of rain showers. Mostly sunny, with a high near 53. Northwest wind 9 to 18 mph, with gusts as high as 39 mph. Chance of precipitation is 30%.

    High: 53 °F

    Slight Chance
    Snow Showers
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31. Northwest wind 10 to 15 mph becoming light and variable. Winds could gust as high as 32 mph.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 67. Light and variable wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. East wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 62. Northwest wind around 14 mph, with gusts as high as 28 mph.
Tonight
Rain showers before midnight, then rain and snow showers likely between midnight and 3am, then a chance of snow showers after 3am. Low around 30. Wind chill values as low as 19. Blustery, with a north wind 15 to 22 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 44. Wind chill values as low as 18. Breezy, with a northwest wind 17 to 22 mph, with gusts as high as 38 mph.
Friday Night
Mostly clear, with a low around 25. Wind chill values as low as 16. Blustery, with a northwest wind 16 to 21 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 36 mph.
Saturday
A chance of snow showers before 2pm, then a chance of rain showers. Mostly sunny, with a high near 53. Northwest wind 9 to 18 mph, with gusts as high as 39 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 31. Northwest wind 10 to 15 mph becoming light and variable. Winds could gust as high as 32 mph.
Sunday
Sunny, with a high near 67. Light and variable wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 39. East wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Monday
Mostly sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
A chance of showers. Mostly sunny, with a high near 83.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 51.
Thursday
A chance of showers. Partly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.24°W (Elev. 3291 ft)
Last Update:
2:57 pm MDT Apr 16, 2026
Forecast Valid:
4pm MDT Apr 16, 2026-6pm MDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation