Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes

Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

A Few Clouds

55°F

13°C

Humidity 38%
Wind Speed Vrbl 5 G 16 mph
Barometer 29.79 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 14 Apr 3:35 pm MDT
Extended Forecast for

3 Miles S Whitewood SD

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly after 4pm.  Mostly cloudy, with a high near 55. West wind around 6 mph.

    High: 55 °F

    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm.  Mostly clear, with a low around 43. Southwest wind 6 to 9 mph.

    Low: 43 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. Southwest wind 6 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 16 mph.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. Breezy, with a west wind 8 to 13 mph becoming southwest 15 to 20 mph after midnight. Winds could gust as high as 28 mph.

    Low: 52 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Thursday

    Thursday: Showers likely after noon.  Mostly sunny, with a high near 62. Breezy, with a southwest wind 17 to 23 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph.  Chance of precipitation is 60%.

    High: 62 °F

    Mostly Sunny
    and Breezy
    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 26. Blustery, with a northwest wind 18 to 25 mph, with gusts as high as 33 mph.  Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Blustery.
    Rain/Snow
    then Snow
    Showers

  • Friday

    Friday: Snow showers likely.  Mostly cloudy, with a high near 34. Breezy, with a northwest wind 22 to 26 mph, with gusts as high as 38 mph.  Chance of precipitation is 70%.

    High: 34 °F

    Snow Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: A slight chance of snow showers before midnight.  Mostly cloudy, with a low around 23. Blustery, with a northwest wind 15 to 22 mph, with gusts as high as 39 mph.

    Low: 23 °F

    Slight Chance
    Snow Showers
    and Blustery
    then Partly
    Cloudy

  • Saturday

    Saturday: A chance of snow showers, mainly after noon.  Mostly sunny, with a high near 41. Breezy.

    High: 41 °F

    Chance Snow
    Showers and
    Breezy

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly after 4pm. Mostly cloudy, with a high near 55. West wind around 6 mph.
Tonight
A 20 percent chance of showers before 8pm. Mostly clear, with a low around 43. Southwest wind 6 to 9 mph.
Wednesday
Sunny, with a high near 65. Southwest wind 6 to 9 mph becoming northeast in the afternoon. Winds could gust as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 52. Breezy, with a west wind 8 to 13 mph becoming southwest 15 to 20 mph after midnight. Winds could gust as high as 28 mph.
Thursday
Showers likely after noon. Mostly sunny, with a high near 62. Breezy, with a southwest wind 17 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 26. Blustery, with a northwest wind 18 to 25 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Friday
Snow showers likely. Mostly cloudy, with a high near 34. Breezy, with a northwest wind 22 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 70%.
Friday Night
A slight chance of snow showers before midnight. Mostly cloudy, with a low around 23. Blustery, with a northwest wind 15 to 22 mph, with gusts as high as 39 mph.
Saturday
A chance of snow showers, mainly after noon. Mostly sunny, with a high near 41. Breezy.
Saturday Night
Mostly clear, with a low around 28.
Sunday
Sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Whitewood SD
 44.42°N 103.63°W (Elev. 4800 ft)
2:02 pm MDT Apr 14, 2026
3pm MDT Apr 14, 2026-6pm MDT Apr 21, 2026
 
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Additional Resources

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