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Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Hazardous Weather Conditions

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

76°F

24°C

Humidity 54%
Wind Speed Calm
Barometer 29.94 in (1010.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 24 Jul 10:52 pm MDT
Extended Forecast for

Rapid Valley SD

Heat Advisory July 25, 12:00pm until July 26, 08:00pm
Red Flag Warning July 25, 12:00pm until July 26, 12:00am
Click here for hazard details and duration
Heat Advisory
Red Flag Warning

  • Tonight

    Tonight: Mostly clear, with a low around 72. West wind around 7 mph, with gusts as high as 15 mph.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Isolated showers and thunderstorms after noon. Mostly sunny and hot, with a high near 106. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 20%.

    High: 106 °F

    Mostly Sunny
    then Isolated
    T-storms

  • Saturday Night

    Saturday Night: Isolated showers and thunderstorms before midnight. Partly cloudy, with a low around 73. Southeast wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 105. West wind 6 to 16 mph becoming north in the afternoon. Winds could gust as high as 28 mph.

    High: 105 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. North wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny and hot, with a high near 102. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 23 mph.

    High: 102 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 98.

    High: 98 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 72. West wind around 7 mph, with gusts as high as 15 mph.
Saturday
Isolated showers and thunderstorms after noon. Mostly sunny and hot, with a high near 106. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 20%.
Saturday Night
Isolated showers and thunderstorms before midnight. Partly cloudy, with a low around 73. Southeast wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Sunday
Sunny and hot, with a high near 105. West wind 6 to 16 mph becoming north in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 72. North wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Monday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny and hot, with a high near 102. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 23 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 69.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 98.
Tuesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 69.
Wednesday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 98.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 97.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 67.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 96.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rapid Valley SD
 44.06°N 103.15°W (Elev. 3107 ft)
Last Update:
10:26 pm MDT Jul 24, 2026
Forecast Valid:
11pm MDT Jul 24, 2026-6pm MDT Jul 31, 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