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Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Partly Cloudy and Windy

46°F

8°C

Humidity 34%
Wind Speed NW 26 G 38 mph
Barometer 30.13 in (1022.2 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 18 Apr 10:52 am MDT
Extended Forecast for

Rapid City Regional Airport SD

  • Today

    Today: A 20 percent chance of showers after noon. Partly sunny, with a high near 55. Breezy, with a northwest wind 22 to 25 mph, with gusts as high as 40 mph.

    High: 55 °F

    Slight Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 28. Blustery, with a northwest wind 15 to 20 mph becoming light after midnight. Winds could gust as high as 34 mph.

    Low: 28 °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 20 percent chance of showers after noon. Partly sunny, with a high near 55. Breezy, with a northwest wind 22 to 25 mph, with gusts as high as 40 mph.
Tonight
Mostly clear, with a low around 28. Blustery, with a northwest wind 15 to 20 mph becoming light after midnight. Winds could gust as high as 34 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:
9:42 am MDT Apr 18, 2026
Forecast Valid:
11am 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