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

58°F

14°C

Humidity 32%
Wind Speed W 12 mph
Barometer 30.05 in (1016.5 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 20 Mar 7:52 am MDT
Extended Forecast for

7 Miles N New Underwood SD

Red Flag Warning March 20, 10:00am until March 20, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  • Today

    Today: Sunny, with a high near 84. Northwest wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 46. Northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 16 mph.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 89. Breezy, with a southwest wind 6 to 11 mph becoming northwest 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 89 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: A 30 percent chance of rain after midnight.  Mostly cloudy, with a low around 40. Breezy, with a north wind 15 to 23 mph, with gusts as high as 33 mph.

    Low: 40 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: A 20 percent chance of rain before noon.  Partly sunny, with a high near 61. North wind around 15 mph, with gusts as high as 25 mph.

    High: 61 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. North wind 7 to 14 mph becoming south after midnight. Winds could gust as high as 21 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 67. South wind 9 to 11 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 67 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36. North wind 6 to 10 mph, with gusts as high as 17 mph.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 84. Northwest wind 7 to 14 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 46. Northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 16 mph.
Saturday
Sunny, with a high near 89. Breezy, with a southwest wind 6 to 11 mph becoming northwest 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 40. Breezy, with a north wind 15 to 23 mph, with gusts as high as 33 mph.
Sunday
A 20 percent chance of rain before noon. Partly sunny, with a high near 61. North wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 35. North wind 7 to 14 mph becoming south after midnight. Winds could gust as high as 21 mph.
Monday
Partly sunny, with a high near 67. South wind 9 to 11 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 36. North wind 6 to 10 mph, with gusts as high as 17 mph.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 55. Windy.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles N New Underwood SD
 44.2°N 102.86°W (Elev. 2799 ft)
7:03 am MDT Mar 20, 2026
8am MDT Mar 20, 2026-6pm MDT Mar 26, 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