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

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 >

Hazardous Weather Conditions

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

Rapid City 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. West wind 5 to 11 mph, with gusts as high as 23 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. West wind 5 to 8 mph, with gusts as high as 17 mph.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 90. West wind 6 to 15 mph, with gusts as high as 25 mph.

    High: 90 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 40. North wind 9 to 17 mph, with gusts as high as 28 mph.

    Low: 40 °F

    Partly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: A 30 percent chance of rain before noon. Partly sunny, with a high near 59. North wind 8 to 10 mph, with gusts as high as 23 mph.

    High: 59 °F

    Chance Rain
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. Northeast wind 5 to 8 mph becoming light and variable. Winds could gust as high as 18 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 67. South wind 5 to 8 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 37. Northeast wind 5 to 8 mph becoming calm. Winds could gust as high as 16 mph.

    Low: 37 °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. West wind 5 to 11 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 47. West wind 5 to 8 mph, with gusts as high as 17 mph.
Saturday
Sunny, with a high near 90. West wind 6 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 40. North wind 9 to 17 mph, with gusts as high as 28 mph.
Sunday
A 30 percent chance of rain before noon. Partly sunny, with a high near 59. North wind 8 to 10 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 35. Northeast wind 5 to 8 mph becoming light and variable. Winds could gust as high as 18 mph.
Monday
Partly sunny, with a high near 67. South wind 5 to 8 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 37. Northeast wind 5 to 8 mph becoming calm. Winds could gust as high as 16 mph.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 54. Breezy.
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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:
7:03 am MDT Mar 20, 2026
Forecast Valid:
8am MDT Mar 20, 2026-6pm MDT Mar 26, 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