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 this 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

40°F

4°C

Humidity 47%
Wind Speed E 10 mph
Barometer 30.07 in (1020.8 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 9 Apr 10:52 am MDT
Extended Forecast for

Rapid Valley SD

  • Today

    Today: Sunny, with a high near 54. East wind 8 to 13 mph becoming northeast in the afternoon. Winds could gust as high as 24 mph.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. Northeast wind 5 to 10 mph becoming light and variable. Winds could gust as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 61. Breezy, with a south wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 61 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44. Breezy, with a south wind 17 to 22 mph, with gusts as high as 38 mph.

    Low: 44 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after noon.  Mostly sunny, with a high near 84. South wind 14 to 16 mph, with gusts as high as 30 mph.

    High: 84 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 51. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    Low: 51 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after noon.  Sunny, with a high near 78. West wind 11 to 15 mph, with gusts as high as 29 mph.

    High: 78 °F

    Sunny then
    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers before midnight.  Partly cloudy, with a low around 46. West wind 5 to 11 mph, with gusts as high as 22 mph.

    Low: 46 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: A chance of showers after noon.  Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 54. East wind 8 to 13 mph becoming northeast in the afternoon. Winds could gust as high as 24 mph.
Tonight
Mostly clear, with a low around 28. Northeast wind 5 to 10 mph becoming light and variable. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 61. Breezy, with a south wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 41 mph.
Friday Night
Mostly cloudy, with a low around 44. Breezy, with a south wind 17 to 22 mph, with gusts as high as 38 mph.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 84. South wind 14 to 16 mph, with gusts as high as 30 mph.
Saturday Night
A 30 percent chance of showers before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 51. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Sunday
A 20 percent chance of showers after noon. Sunny, with a high near 78. West wind 11 to 15 mph, with gusts as high as 29 mph.
Sunday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 46. West wind 5 to 11 mph, with gusts as high as 22 mph.
Monday
A chance of showers after noon. Partly sunny, with a high near 72.
Monday Night
A chance of showers. Mostly cloudy, with a low around 40.
Tuesday
Showers likely. Partly sunny, with a high near 58.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 36.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid Valley SD
 44.06°N 103.15°W (Elev. 3107 ft)
9:22 am MDT Apr 9, 2026
11am MDT Apr 9, 2026-6pm MDT Apr 15, 2026
 
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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