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

Heavy Rain and Thunderstorms in the Plains; Snow in the Northern Rockies

A storm system moving eastward will bring widespread showers and thunderstorms over parts of the Northern Plains to the Southern Plains and Upper Great Lakes through Friday. Heavy snow will continue over parts of the Northern Rockies. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fog/Mist

50°F

10°C

Humidity 93%
Wind Speed E 3 mph
Barometer 29.96 in (1015.0 mb)
Dewpoint 48°F (9°C)
Visibility 1.50 mi
Last update 15 Oct 5:52 pm MDT
Extended Forecast for

Rapid City SD

  • Tonight

    Tonight: Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then a slight chance of showers and thunderstorms after 3am. Areas of fog. Low around 47. East wind 5 to 7 mph becoming north in the evening. Chance of precipitation is 90%.

    Low: 47 °F

    Showers and
    Areas Fog
    then Showers
    Likely and
    Areas Fog

  • Thursday

    Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 60. North wind 7 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.

    High: 60 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 41. Southwest wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 65. Southwest wind 6 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 40. West wind around 9 mph, with gusts as high as 26 mph.

    Low: 40 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A 40 percent chance of rain before noon. Mostly cloudy, then gradually becoming sunny, with a high near 53. Breezy, with a northwest wind 10 to 15 mph increasing to 17 to 22 mph in the morning. Winds could gust as high as 40 mph.

    High: 53 °F

    Breezy.
    Chance Rain
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 33. Northwest wind 7 to 10 mph becoming southwest after midnight. Winds could gust as high as 23 mph.

    Low: 33 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 69. South wind 7 to 11 mph, with gusts as high as 24 mph.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then a slight chance of showers and thunderstorms after 3am. Areas of fog. Low around 47. East wind 5 to 7 mph becoming north in the evening. Chance of precipitation is 90%.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 60. North wind 7 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph.
Thursday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 41. Southwest wind 6 to 8 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 65. Southwest wind 6 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.
Friday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 40. West wind around 9 mph, with gusts as high as 26 mph.
Saturday
A 40 percent chance of rain before noon. Mostly cloudy, then gradually becoming sunny, with a high near 53. Breezy, with a northwest wind 10 to 15 mph increasing to 17 to 22 mph in the morning. Winds could gust as high as 40 mph.
Saturday Night
Clear, with a low around 33. Northwest wind 7 to 10 mph becoming southwest after midnight. Winds could gust as high as 23 mph.
Sunday
Sunny, with a high near 69. South wind 7 to 11 mph, with gusts as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 45.
Monday
A slight chance of rain after noon. Mostly sunny, with a high near 63. Breezy.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 37.
Tuesday
Sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 62.
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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:
5:06 pm MDT Oct 15, 2025
Forecast Valid:
6pm MDT Oct 15, 2025-6pm MDT Oct 22, 2025
 
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