Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Rapid City, Rapid City Regional Airport (KRAP)

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

Fair

83°F

28°C

Humidity 40%
Wind Speed SE 17 G 25 mph
Barometer 30.22 in (1021.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 22 Aug 1:52 pm MDT
Extended Forecast for

5 Miles NNE Keystone SD

  • This Afternoon

    This Afternoon: Partly sunny, with a steady temperature around 77. Southeast wind around 8 mph, with gusts as high as 24 mph.

    High: 77 °F

    Partly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms before 3am.  Mostly cloudy, with a low around 61. South wind 6 to 8 mph, with gusts as high as 22 mph.

    Low: 61 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 87. South wind around 6 mph becoming light and variable  in the afternoon. Winds could gust as high as 17 mph.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 64. Light and variable wind becoming west around 6 mph in the evening. Winds could gust as high as 17 mph.

    Low: 64 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 86. West wind around 6 mph becoming north in the morning. Winds could gust as high as 20 mph.

    High: 86 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 60. North wind around 5 mph becoming calm  in the evening. Winds could gust as high as 17 mph.  Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 9am.  Mostly sunny, with a high near 80. Chance of precipitation is 50%.

    High: 80 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after noon.  Sunny, with a high near 80.

    High: 80 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Partly sunny, with a steady temperature around 77. Southeast wind around 8 mph, with gusts as high as 24 mph.
Tonight
A 40 percent chance of showers and thunderstorms before 3am. Mostly cloudy, with a low around 61. South wind 6 to 8 mph, with gusts as high as 22 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. South wind around 6 mph becoming light and variable in the afternoon. Winds could gust as high as 17 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 64. Light and variable wind becoming west around 6 mph in the evening. Winds could gust as high as 17 mph.
Monday
A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 86. West wind around 6 mph becoming north in the morning. Winds could gust as high as 20 mph.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60. North wind around 5 mph becoming calm in the evening. Winds could gust as high as 17 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 9am. Mostly sunny, with a high near 80. Chance of precipitation is 50%.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 83.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Keystone SD
 43.96°N 103.41°W (Elev. 4928 ft)
12:56 pm MDT Aug 22, 2026
2pm MDT Aug 22, 2026-6pm MDT Aug 28, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database