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

59°F

15°C

Humidity 31%
Wind Speed SE 12 G 17 mph
Barometer 29.56 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 16 Apr 5:55 am MDT
Extended Forecast for

4 Miles SW North Spearfish SD

  • Today

    Today: A slight chance of showers, then showers and possibly a thunderstorm after 3pm.  Temperature rising to near 57 by 8am, then falling to around 46 during the remainder of the day. Breezy, with a west wind 20 to 25 mph becoming north 14 to 19 mph in the afternoon. Winds could gust as high as 38 mph.  Chance of precipitation is 80%.

    High: 57 °F

    Mostly Sunny
    and Breezy
    then Showers

  • Tonight

    Tonight: Snow showers.  Low around 24. Wind chill values as low as 14. Northwest wind 15 to 17 mph, with gusts as high as 24 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 24 °F

    Snow Showers

  • Friday

    Friday: A 50 percent chance of snow showers.  Mostly cloudy, with a high near 35. Wind chill values as low as 12. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.  New snow accumulation of less than a half inch possible.

    High: 35 °F

    Chance Snow
    Showers and
    Breezy

  • Friday Night

    Friday Night: A 20 percent chance of snow showers.  Partly cloudy, with a low around 23. Wind chill values as low as 12. Blustery, with a west wind 11 to 20 mph, with gusts as high as 29 mph.

    Low: 23 °F

    Slight Chance
    Snow Showers
    and Blustery

  • Saturday

    Saturday: A 30 percent chance of snow showers.  Mostly sunny, with a high near 44. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 31 mph.

    High: 44 °F

    Chance Snow
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31. Northwest wind 8 to 17 mph becoming southwest after midnight. Winds could gust as high as 26 mph.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. Southwest wind 6 to 10 mph becoming northeast in the morning. Winds could gust as high as 17 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41. East wind around 10 mph becoming south after midnight. Winds could gust as high as 17 mph.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers, then showers and possibly a thunderstorm after 3pm. Temperature rising to near 57 by 8am, then falling to around 46 during the remainder of the day. Breezy, with a west wind 20 to 25 mph becoming north 14 to 19 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 80%.
Tonight
Snow showers. Low around 24. Wind chill values as low as 14. Northwest wind 15 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 35. Wind chill values as low as 12. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.
Friday Night
A 20 percent chance of snow showers. Partly cloudy, with a low around 23. Wind chill values as low as 12. Blustery, with a west wind 11 to 20 mph, with gusts as high as 29 mph.
Saturday
A 30 percent chance of snow showers. Mostly sunny, with a high near 44. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 31 mph.
Saturday Night
Mostly clear, with a low around 31. Northwest wind 8 to 17 mph becoming southwest after midnight. Winds could gust as high as 26 mph.
Sunday
Sunny, with a high near 59. Southwest wind 6 to 10 mph becoming northeast in the morning. Winds could gust as high as 17 mph.
Sunday Night
Mostly clear, with a low around 41. East wind around 10 mph becoming south after midnight. Winds could gust as high as 17 mph.
Monday
Sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Sunny, with a high near 72.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 50.
Wednesday
A chance of showers. Partly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW North Spearfish SD
 44.47°N 103.97°W (Elev. 5299 ft)
5:47 am MDT Apr 16, 2026
6am MDT Apr 16, 2026-6pm MDT Apr 22, 2026
 
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Additional Resources

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