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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

36°F

2°C

Humidity 64%
Wind Speed N 13 mph
Barometer 30.12 in (1022.3 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 18 Apr 7:52 am MDT
Extended Forecast for

Rapid City SD

  • Today

    Today: A slight chance of snow showers before 1pm, then a slight chance of rain showers. Mostly sunny, with a high near 53. Breezy, with a northwest wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 20%.

    High: 53 °F

    Isolated Snow
    Showers then
    Isolated
    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 31. Northwest wind 13 to 18 mph becoming light west after midnight. Winds could gust as high as 32 mph.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 64. Light and variable wind becoming southeast 6 to 11 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Southeast wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 23 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 81. Southwest wind 6 to 11 mph becoming north in the afternoon. Winds could gust as high as 23 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. North wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 30 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after noon. Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

Today
A slight chance of snow showers before 1pm, then a slight chance of rain showers. Mostly sunny, with a high near 53. Breezy, with a northwest wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 31. Northwest wind 13 to 18 mph becoming light west after midnight. Winds could gust as high as 32 mph.
Sunday
Sunny, with a high near 64. Light and variable wind becoming southeast 6 to 11 mph in the afternoon. Winds could gust as high as 24 mph.
Sunday Night
Mostly clear, with a low around 39. Southeast wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 23 mph.
Monday
Mostly sunny, with a high near 81. Southwest wind 6 to 11 mph becoming north in the afternoon. Winds could gust as high as 23 mph.
Monday Night
Mostly clear, with a low around 46. North wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 86. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 54. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.
Wednesday
A slight chance of showers after noon. Partly sunny, with a high near 85.
Wednesday Night
A chance of showers, mainly before midnight. Mostly cloudy, with a low around 49.
Thursday
A chance of showers. Partly sunny, with a high near 64. Breezy.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 32. Breezy.
Friday
A chance of rain and snow showers. Partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.24°W (Elev. 3291 ft)
Last Update:
6:57 am MDT Apr 18, 2026
Forecast Valid:
8am MDT Apr 18, 2026-6pm MDT Apr 24, 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