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

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

26°F

-3°C

Humidity 78%
Wind Speed SE 3 mph
Barometer 30.03 in (1018.4 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 9 Apr 5:52 am MDT
Extended Forecast for

Rapid City SD

  • Today

    Today: Mostly sunny, with a high near 54. Light and variable wind becoming northeast 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 54 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. Northeast wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 59. Breezy, with a light south wind increasing to 15 to 20 mph in the morning. Winds could gust as high as 39 mph.

    High: 59 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46. South wind 13 to 18 mph, with gusts as high as 37 mph.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Partly sunny, with a high near 82. Southwest wind 11 to 14 mph, with gusts as high as 29 mph.

    High: 82 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before midnight. Partly cloudy, with a low around 52. South wind around 10 mph becoming west after midnight. Winds could gust as high as 22 mph.

    Low: 52 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 76. West wind 10 to 13 mph, with gusts as high as 28 mph.

    High: 76 °F

    Sunny then
    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, mainly before midnight. Mostly cloudy, with a low around 45. West wind 5 to 10 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Chance
    Showers

  • Monday

    Monday: Showers likely, mainly after noon. Partly sunny, with a high near 64.

    High: 64 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 54. Light and variable wind becoming northeast 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Tonight
Mostly clear, with a low around 30. Northeast wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.
Friday
Mostly sunny, with a high near 59. Breezy, with a light south wind increasing to 15 to 20 mph in the morning. Winds could gust as high as 39 mph.
Friday Night
Mostly cloudy, with a low around 46. South wind 13 to 18 mph, with gusts as high as 37 mph.
Saturday
A 20 percent chance of showers after noon. Partly sunny, with a high near 82. Southwest wind 11 to 14 mph, with gusts as high as 29 mph.
Saturday Night
A 30 percent chance of showers before midnight. Partly cloudy, with a low around 52. South wind around 10 mph becoming west after midnight. Winds could gust as high as 22 mph.
Sunday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 76. West wind 10 to 13 mph, with gusts as high as 28 mph.
Sunday Night
A chance of showers, mainly before midnight. Mostly cloudy, with a low around 45. West wind 5 to 10 mph, with gusts as high as 21 mph.
Monday
Showers likely, mainly after noon. Partly sunny, with a high near 64.
Monday Night
Showers likely. Mostly cloudy, with a low around 34.
Tuesday
Showers likely. Mostly cloudy, with a high near 48.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 33.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.24°W (Elev. 3291 ft)
Last Update:
4:37 am MDT Apr 9, 2026
Forecast Valid:
6am MDT Apr 9, 2026-6pm MDT Apr 15, 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