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7-Day Forecast 43.98°N 103.47°W (Text-Only)
NWS Forecast for: 6 Miles NNW Keystone SD
Issued by: National Weather Service Rapid City, SD
Last Update: 1:21 am MDT Aug 10, 2026		Print

  • Overnight

    Overnight: Mostly clear, with a low around 16. Calm wind.

    Low: 16 °C

    Mostly Clear



  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm. Areas of smoke. Mostly sunny, with a high near 33. Light and variable wind becoming south 9 to 14 km/h in the morning. Winds could gust as high as 35 km/h.

    High: 33 °C

    Areas Smoke
    then Slight
    Chance
    T-storms

  • Monday
    Night

    Monday Night: Areas of smoke. Partly cloudy, with a low around 16. East wind 9 to 14 km/h becoming light and variable in the evening. Winds could gust as high as 32 km/h.

    Low: 16 °C

    Areas Smoke



  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon. Areas of smoke. Mostly sunny, with a high near 32. Calm wind becoming east 5 to 10 km/h in the morning. Winds could gust as high as 34 km/h.

    High: 32 °C

    Areas Smoke
    then Chance
    T-storms

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 15. East wind 5 to 8 km/h becoming calm in the evening. Winds could gust as high as 32 km/h.

    Low: 15 °C

    Slight Chance
    T-storms


  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after noon. Mostly cloudy, with a high near 27. Light and variable wind becoming east 6 to 11 km/h in the morning. Winds could gust as high as 34 km/h. Chance of precipitation is 70%.

    High: 27 °C

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Wednesday
    Night

    Wednesday Night: Showers and thunderstorms likely. Cloudy, with a low around 12. Chance of precipitation is 70%.

    Low: 12 °C

    T-storms
    Likely


  • Thursday

    Thursday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. Cloudy, with a high near 20.

    High: 20 °C

    T-storms



  • Thursday
    Night

    Thursday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 11.

    Low: 11 °C

    Showers



    • Overnight: Mostly clear, with a low around 16. Calm wind.

    Monday: A 20 percent chance of showers and thunderstorms after 3pm. Areas of smoke. Mostly sunny, with a high near 33. Light and variable wind becoming south 9 to 14 km/h in the morning. Winds could gust as high as 35 km/h.

    Monday Night: Areas of smoke. Partly cloudy, with a low around 16. East wind 9 to 14 km/h becoming light and variable in the evening. Winds could gust as high as 32 km/h.

    Tuesday: A 30 percent chance of showers and thunderstorms after noon. Areas of smoke. Mostly sunny, with a high near 32. Calm wind becoming east 5 to 10 km/h in the morning. Winds could gust as high as 34 km/h.

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 15. East wind 5 to 8 km/h becoming calm in the evening. Winds could gust as high as 32 km/h.

    Wednesday: Showers and thunderstorms likely, mainly after noon. Mostly cloudy, with a high near 27. Light and variable wind becoming east 6 to 11 km/h in the morning. Winds could gust as high as 34 km/h. Chance of precipitation is 70%.

    Wednesday Night: Showers and thunderstorms likely. Cloudy, with a low around 12. Chance of precipitation is 70%.

    Thursday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. Cloudy, with a high near 20.

    Thursday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 11.

    Friday: Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 22.

    Friday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 11.

    Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 23.

    Saturday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 11.

    Sunday: Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 25.


    6 Miles NNW Keystone SD
     43.98°N 103.47°W (Elev. 4800 m)

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