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

Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Mostly Cloudy

22°F

-6°C

Humidity 82%
Wind Speed W 3 mph
Barometer 30.07 in (1021.4 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 18 Apr 4:52 am MDT
Extended Forecast for

Rapid City Regional Airport SD

  • Today

    Today: A slight chance of snow showers between noon and 1pm, then a slight chance of rain showers after 1pm. Mostly sunny, with a high near 55. Wind chill values as low as 19 early. Breezy, with a northwest wind 7 to 17 mph increasing to 18 to 28 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 20%.

    High: 55 °F

    Breezy.
    Mostly Sunny
    then Isolated
    Rain/Snow

  • Tonight

    Tonight: Mostly clear, with a low around 25. Blustery, with a northwest wind 17 to 22 mph becoming light west after midnight. Winds could gust as high as 33 mph.

    Low: 25 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 65. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 24 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. Southeast wind 6 to 15 mph becoming south after midnight. Winds could gust as high as 24 mph.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 82. South wind 7 to 14 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. North wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Light and variable wind becoming south 11 to 16 mph in the morning. Winds could gust as high as 30 mph.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48. South wind 8 to 15 mph, with gusts as high as 24 mph.

    Low: 48 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after noon. Partly sunny, with a high near 87. Breezy.

    High: 87 °F

    Partly Sunny
    then Slight
    Chance
    Showers and
    Breezy

Detailed Forecast

Today
A slight chance of snow showers between noon and 1pm, then a slight chance of rain showers after 1pm. Mostly sunny, with a high near 55. Wind chill values as low as 19 early. Breezy, with a northwest wind 7 to 17 mph increasing to 18 to 28 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 25. Blustery, with a northwest wind 17 to 22 mph becoming light west after midnight. Winds could gust as high as 33 mph.
Sunday
Sunny, with a high near 65. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 24 mph.
Sunday Night
Mostly clear, with a low around 35. Southeast wind 6 to 15 mph becoming south after midnight. Winds could gust as high as 24 mph.
Monday
Mostly sunny, with a high near 82. South wind 7 to 14 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Mostly clear, with a low around 42. North wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Tuesday
Sunny, with a high near 88. Light and variable wind becoming south 11 to 16 mph in the morning. Winds could gust as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 48. South wind 8 to 15 mph, with gusts as high as 24 mph.
Wednesday
A slight chance of showers after noon. Partly sunny, with a high near 87. Breezy.
Wednesday Night
A chance of showers, mainly before midnight. Mostly cloudy, with a low around 47.
Thursday
A chance of showers. Partly sunny, with a high near 65. Windy.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 30. Windy.
Friday
A slight chance of rain and snow showers. Mostly sunny, with a high near 54. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid City Regional Airport SD
 44.04°N 103.06°W (Elev. 3100 ft)
Last Update:
4:02 am MDT Apr 18, 2026
Forecast Valid:
5am MDT Apr 18, 2026-6pm MDT Apr 24, 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