Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

54°F

12°C

Humidity 42%
Wind Speed W 10 mph
Barometer 29.56 in (998.7 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 12 Apr 2:52 am MDT
Extended Forecast for

Rapid Valley SD

Red Flag Warning April 12, 02:59am until April 12, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning April 12, 02:59am until April 12, 09:00pm

    NOW until 9:00pm Sun

    Red Flag Warning

  • Overnight

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. West wind around 10 mph becoming north in the afternoon. Winds could gust as high as 23 mph.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before midnight.  Partly cloudy, with a low around 45. Northeast wind 5 to 8 mph becoming light and variable. Winds could gust as high as 16 mph.

    Low: 45 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of showers after noon.  Sunny, with a high near 74. Breezy, with a west wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 74 °F

    Sunny then
    Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. Northwest wind 12 to 17 mph becoming light west. Winds could gust as high as 30 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly after noon.  Partly sunny, with a high near 67. West wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 67 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight.  Mostly cloudy, with a low around 40. East wind 5 to 8 mph becoming southwest in the evening. Winds could gust as high as 16 mph.

    Low: 40 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after noon.  Mostly sunny, with a high near 73. Southwest wind 6 to 11 mph becoming south in the morning. Winds could gust as high as 23 mph.

    High: 73 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 51. West wind 11 to 13 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 78. West wind around 10 mph becoming north in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 45. Northeast wind 5 to 8 mph becoming light and variable. Winds could gust as high as 16 mph.
Monday
A 30 percent chance of showers after noon. Sunny, with a high near 74. Breezy, with a west wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 34 mph.
Monday Night
Partly cloudy, with a low around 39. Northwest wind 12 to 17 mph becoming light west. Winds could gust as high as 30 mph.
Tuesday
A 30 percent chance of showers, mainly after noon. Partly sunny, with a high near 67. West wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 40. East wind 5 to 8 mph becoming southwest in the evening. Winds could gust as high as 16 mph.
Wednesday
A slight chance of showers after noon. Mostly sunny, with a high near 73. Southwest wind 6 to 11 mph becoming south in the morning. Winds could gust as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
A chance of showers after noon. Partly sunny, with a high near 70. Breezy.
Thursday Night
Rain and snow showers likely. Mostly cloudy, with a low around 30. Blustery.
Friday
A chance of snow showers. Mostly cloudy, with a high near 45. Breezy.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 26.
Saturday
A chance of rain and snow showers. Partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid Valley SD
 44.06°N 103.15°W (Elev. 3107 ft)
2:13 am MDT Apr 12, 2026
2am MDT Apr 12, 2026-6pm MDT Apr 18, 2026
 
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Additional Resources

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