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Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

A Few Clouds

63°F

17°C

Humidity 38%
Wind Speed NE 14 G 21 mph
Barometer 29.67 in (1002.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 12 Apr 8:52 pm MDT
Extended Forecast for

Rapid Valley SD

Red Flag Warning April 12, 09:22pm until April 13, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning April 12, 09:22pm until April 13, 09:00pm

    NOW until 9:00pm Mon

    Red Flag Warning

  • Tonight

    Low: 44 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75. Breezy, with a southwest wind 6 to 11 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 75 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. Breezy, with a northwest wind 19 to 24 mph becoming light and variable. Winds could gust as high as 33 mph.

    Low: 40 °F

    Mostly Clear
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 67. West wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 16 mph.

    High: 67 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 39. East wind 5 to 7 mph becoming light and variable.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73. Southwest wind 5 to 11 mph becoming south in the afternoon. Winds could gust as high as 23 mph.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. Southwest wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers after noon. Mostly sunny, with a high near 73. Breezy, with a southwest wind 11 to 16 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 73 °F

    Partly Sunny
    then Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 44. Calm wind becoming west around 5 mph after midnight.
Monday
Mostly sunny, with a high near 75. Breezy, with a southwest wind 6 to 11 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 34 mph.
Monday Night
Partly cloudy, with a low around 40. Breezy, with a northwest wind 19 to 24 mph becoming light and variable. Winds could gust as high as 33 mph.
Tuesday
Partly sunny, with a high near 67. West wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 16 mph.
Tuesday Night
Partly cloudy, with a low around 39. East wind 5 to 7 mph becoming light and variable.
Wednesday
Mostly sunny, with a high near 73. Southwest wind 5 to 11 mph becoming south in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 46. Southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Thursday
A chance of showers after noon. Mostly sunny, with a high near 73. Breezy, with a southwest wind 11 to 16 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 37 mph.
Thursday Night
Rain showers likely before 9pm, then rain and snow showers likely between 9pm and 3am, then a chance of snow showers after 3am. Mostly cloudy, with a low around 29. Blustery.
Friday
A chance of snow showers. Mostly cloudy, with a high near 43. Breezy.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 23. Blustery.
Saturday
A chance of snow showers. Mostly sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rapid Valley SD
 44.06°N 103.15°W (Elev. 3107 ft)
Last Update:
8:12 pm MDT Apr 12, 2026
Forecast Valid:
9pm MDT Apr 12, 2026-6pm MDT Apr 19, 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