Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

51°F

11°C

Humidity 43%
Wind Speed W 7 mph
Barometer 29.87 in (1009.3 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 21 Mar 2:52 am MDT
Extended Forecast for

Rapid City SD

Red Flag Warning March 21, 03:07am until March 21, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning March 21, 03:07am until March 21, 09:00pm

    NOW until 9:00pm Sat

    Red Flag Warning

  • Overnight

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91. West wind 6 to 16 mph becoming northeast in the afternoon. Winds could gust as high as 24 mph.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of rain after midnight.  Mostly cloudy, with a low around 41. Breezy, with a west wind 15 to 20 mph becoming north 6 to 11 mph after midnight. Winds could gust as high as 29 mph.

    Low: 41 °F

    Partly Cloudy
    and Breezy
    then Chance
    Rain

  • Sunday

    Sunday: A 30 percent chance of rain before noon.  Cloudy, then gradually becoming mostly sunny, with a high near 60. North wind 5 to 9 mph, with gusts as high as 21 mph.

    High: 60 °F

    Chance Rain
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. North wind 5 to 8 mph becoming calm  in the evening. Winds could gust as high as 17 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 67. Light and variable wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 67 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. Northeast wind 5 to 7 mph becoming calm  in the evening. Winds could gust as high as 15 mph.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 68. Light and variable wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 24 mph.

    High: 68 °F

    Partly Sunny

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 61. West wind around 6 mph.
Saturday
Sunny, with a high near 91. West wind 6 to 16 mph becoming northeast in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 41. Breezy, with a west wind 15 to 20 mph becoming north 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Sunday
A 30 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 60. North wind 5 to 9 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 35. North wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Monday
Mostly sunny, with a high near 67. Light and variable wind becoming east 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 40. Northeast wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Tuesday
Partly sunny, with a high near 68. Light and variable wind becoming east 6 to 11 mph in the morning. Winds could gust as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Mostly cloudy, with a low around 38.
Thursday
Partly sunny, with a high near 59. Breezy.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid City SD
 44.08°N 103.24°W (Elev. 3291 ft)
12:32 am MDT Mar 21, 2026
3am MDT Mar 21, 2026-6pm MDT Mar 27, 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