Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

39°F

4°C

Humidity 61%
Wind Speed Calm
Barometer 29.74 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 15 Apr 3:35 am MDT
Extended Forecast for

Belle Fourche SD

  • Overnight

    Overnight: Mostly clear, with a low around 32. Southwest wind around 6 mph.

    Low: 32 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72. Light and variable wind becoming southwest 5 to 8 mph in the morning. Winds could gust as high as 15 mph.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47. Southwest wind 7 to 15 mph becoming southeast in the evening. Winds could gust as high as 24 mph.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Showers likely after noon.  Increasing clouds, with a high near 64. Breezy, with a west wind 15 to 23 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph.  Chance of precipitation is 60%.

    High: 64 °F

    Breezy.
    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Rain showers before 9pm, then rain and snow showers between 9pm and 11pm, then snow showers after 11pm.  Low around 27. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 29 mph.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 27 °F

    Rain/Snow and
    Blustery then
    Snow Showers

  • Friday

    Friday: A 50 percent chance of snow showers.  Mostly cloudy, with a high near 40. Breezy, with a northwest wind 15 to 24 mph, with gusts as high as 37 mph.  New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance Snow
    Showers and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21. Blustery, with a west wind 16 to 21 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 31 mph.

    Low: 21 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Saturday

    Saturday: A slight chance of snow showers before 3pm, then a slight chance of rain and snow showers between 3pm and 4pm, then a slight chance of rain showers after 4pm.  Mostly sunny, with a high near 49. Breezy, with a northwest wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 49 °F

    Slight Chance
    Rain/Snow and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 32. Southwest wind around 6 mph.
Wednesday
Sunny, with a high near 72. Light and variable wind becoming southwest 5 to 8 mph in the morning. Winds could gust as high as 15 mph.
Wednesday Night
Mostly clear, with a low around 47. Southwest wind 7 to 15 mph becoming southeast in the evening. Winds could gust as high as 24 mph.
Thursday
Showers likely after noon. Increasing clouds, with a high near 64. Breezy, with a west wind 15 to 23 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 60%.
Thursday Night
Rain showers before 9pm, then rain and snow showers between 9pm and 11pm, then snow showers after 11pm. Low around 27. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Friday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 40. Breezy, with a northwest wind 15 to 24 mph, with gusts as high as 37 mph. New snow accumulation of less than a half inch possible.
Friday Night
Partly cloudy, with a low around 21. Blustery, with a west wind 16 to 21 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 31 mph.
Saturday
A slight chance of snow showers before 3pm, then a slight chance of rain and snow showers between 3pm and 4pm, then a slight chance of rain showers after 4pm. Mostly sunny, with a high near 49. Breezy, with a northwest wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.
Saturday Night
Mostly clear, with a low around 26.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Belle Fourche SD
 44.67°N 103.86°W (Elev. 3025 ft)
2:02 am MDT Apr 15, 2026
3am MDT Apr 15, 2026-6pm MDT Apr 21, 2026
 
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Additional Resources

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