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 75%
Wind Speed S 10 mph
Barometer 29.77 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 14 Apr 10:55 pm MDT
Extended Forecast for

4 Miles SSW Lead SD

  • Tonight

    Tonight: Mostly clear, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 62. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 62 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. Southwest wind 5 to 10 mph, with gusts as high as 28 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Showers likely after noon.  Increasing clouds, with a high near 60. Southwest wind 8 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph.  Chance of precipitation is 70%.

    High: 60 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Rain showers before 8pm, then rain and snow showers between 8pm and 9pm, then snow showers after 9pm.  Low around 19. Northwest wind around 9 mph, with gusts as high as 29 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 19 °F

    Rain/Snow
    then Snow
    Showers

  • Friday

    Friday: Snow showers.  High near 31. Northwest wind 9 to 11 mph, with gusts as high as 33 mph.  Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 31 °F

    Snow Showers

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight.  Mostly cloudy, with a low around 16. Northwest wind 10 to 14 mph, with gusts as high as 34 mph.

    Low: 16 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Saturday

    Saturday: A chance of snow showers.  Mostly sunny, with a high near 37. Northwest wind 10 to 14 mph, with gusts as high as 33 mph.

    High: 37 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 33. Calm wind.
Wednesday
Sunny, with a high near 62. Calm wind becoming southwest around 6 mph in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 41. Southwest wind 5 to 10 mph, with gusts as high as 28 mph.
Thursday
Showers likely after noon. Increasing clouds, with a high near 60. Southwest wind 8 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 70%.
Thursday Night
Rain showers before 8pm, then rain and snow showers between 8pm and 9pm, then snow showers after 9pm. Low around 19. Northwest wind around 9 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow showers. High near 31. Northwest wind 9 to 11 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday Night
A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 16. Northwest wind 10 to 14 mph, with gusts as high as 34 mph.
Saturday
A chance of snow showers. Mostly sunny, with a high near 37. Northwest wind 10 to 14 mph, with gusts as high as 33 mph.
Saturday Night
Mostly clear, with a low around 22.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 32.
Monday
Sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 68.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Lead SD
 44.29°N 103.8°W (Elev. 5761 ft)
9:37 pm MDT Apr 14, 2026
11pm MDT Apr 14, 2026-6pm MDT Apr 21, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database