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

Sinlaku Continues to Impact the Marianas; Severe Weather for the Central Plains and Northeast; Record Warmth for mid-Atlantic to Southeast

Sinlaku continues to affect the Marianas as it moves north through Friday. Meanwhile, severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley today and for the Central/Southern Plains on Friday. Considerable flooding impacts are ongoing in the Upper Great Lakes, and expected to continue through the weekend. Fire weather concerns persist in the Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair and Breezy

63°F

17°C

Humidity 32%
Wind Speed SW 23 G 30 mph
Barometer 29.58 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 16 Apr 8:55 am MDT
Extended Forecast for

Spearfish SD

  • Today

    Today: A chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers and possibly a thunderstorm after 4pm. Temperature falling to around 53 by 5pm. Windy, with a north wind 28 to 33 mph decreasing to 18 to 23 mph in the afternoon. Winds could gust as high as 46 mph. Chance of precipitation is 80%.

    High: 63 °F⇓

    Mostly Sunny
    and Windy
    then Showers
    and Breezy

  • Tonight

    Tonight: Rain showers before 8pm, then snow showers. Low around 26. Wind chill values as low as 17. Northwest wind 14 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 26 °F

    Rain/Snow
    then Snow
    Showers

  • Friday

    Friday: A 50 percent chance of snow showers. Mostly cloudy, with a high near 40. Wind chill values as low as 14. Breezy, with a northwest wind 14 to 23 mph, with gusts as high as 34 mph. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance Snow
    Showers and
    Breezy

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Mostly clear, with a low around 23. Wind chill values as low as 14. Blustery, with a west wind 16 to 21 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 32 mph.

    Low: 23 °F

    Slight Chance
    Snow Showers
    and Blustery
    then Mostly
    Clear

  • Saturday

    Saturday: A chance of snow showers before 4pm, then a chance of rain and snow showers. Mostly sunny, with a high near 48. Breezy, with a northwest wind 13 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.

    High: 48 °F

    Breezy.
    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31. Northwest wind 12 to 17 mph becoming southwest 6 to 11 mph in the evening. Winds could gust as high as 29 mph.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 63. Southwest wind 5 to 11 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. East wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

Today
A chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers and possibly a thunderstorm after 4pm. Temperature falling to around 53 by 5pm. Windy, with a north wind 28 to 33 mph decreasing to 18 to 23 mph in the afternoon. Winds could gust as high as 46 mph. Chance of precipitation is 80%.
Tonight
Rain showers before 8pm, then snow showers. Low around 26. Wind chill values as low as 17. Northwest wind 14 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Friday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 40. Wind chill values as low as 14. Breezy, with a northwest wind 14 to 23 mph, with gusts as high as 34 mph. New snow accumulation of less than a half inch possible.
Friday Night
A 20 percent chance of snow showers before midnight. Mostly clear, with a low around 23. Wind chill values as low as 14. Blustery, with a west wind 16 to 21 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 32 mph.
Saturday
A chance of snow showers before 4pm, then a chance of rain and snow showers. Mostly sunny, with a high near 48. Breezy, with a northwest wind 13 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 31. Northwest wind 12 to 17 mph becoming southwest 6 to 11 mph in the evening. Winds could gust as high as 29 mph.
Sunday
Sunny, with a high near 63. Southwest wind 5 to 11 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 40. East wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 76.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 49.
Wednesday
A chance of showers. Partly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Spearfish SD
 44.5°N 103.85°W (Elev. 3911 ft)
Last Update:
8:36 am MDT Apr 16, 2026
Forecast Valid:
9am MDT Apr 16, 2026-6pm MDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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