Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Light Rain

50°F

10°C

Humidity 82%
Wind Speed N 10 mph
Barometer 29.72 in
Dewpoint 45°F (7°C)
Visibility 1.75 mi
Wind Chill46°F (8°C)
Last update 13 Apr 9:15 am MDT
Extended Forecast for

9 Miles SW North Spearfish SD

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 59. Southwest wind 8 to 17 mph, with gusts as high as 31 mph.

    High: 59 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 36. West wind 8 to 13 mph becoming light  after midnight. Winds could gust as high as 24 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers after noon.  Mostly sunny, with a high near 56. Light and variable wind becoming northwest around 6 mph. Winds could gust as high as 15 mph.

    High: 56 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight.  Mostly clear, with a low around 37. Light and variable wind becoming south around 6 mph after midnight. Winds could gust as high as 15 mph.

    Low: 37 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers after noon.  Sunny, with a high near 61. Southwest wind around 6 mph, with gusts as high as 18 mph.

    High: 61 °F

    Sunny then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. Southwest wind 6 to 11 mph, with gusts as high as 28 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Showers likely after noon.  Mostly sunny, with a high near 60. Southwest wind 10 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph.  Chance of precipitation is 60%.

    High: 60 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Rain and snow showers, becoming all snow after 9pm.  Mostly cloudy, with a low around 21. Northwest wind around 14 mph, with gusts as high as 28 mph.

    Low: 21 °F

    Rain/Snow
    then Snow
    Showers

  • Friday

    Friday: Snow showers likely.  Mostly cloudy, with a high near 32.

    High: 32 °F

    Snow Showers
    Likely

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 59. Southwest wind 8 to 17 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 36. West wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 24 mph.
Tuesday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 56. Light and variable wind becoming northwest around 6 mph. Winds could gust as high as 15 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 37. Light and variable wind becoming south around 6 mph after midnight. Winds could gust as high as 15 mph.
Wednesday
A 20 percent chance of showers after noon. Sunny, with a high near 61. Southwest wind around 6 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 45. Southwest wind 6 to 11 mph, with gusts as high as 28 mph.
Thursday
Showers likely after noon. Mostly sunny, with a high near 60. Southwest wind 10 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 60%.
Thursday Night
Rain and snow showers, becoming all snow after 9pm. Mostly cloudy, with a low around 21. Northwest wind around 14 mph, with gusts as high as 28 mph.
Friday
Snow showers likely. Mostly cloudy, with a high near 32.
Friday Night
A chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 19.
Saturday
A slight chance of snow showers. Mostly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Sunny, with a high near 58.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SW North Spearfish SD
 44.41°N 104.02°W (Elev. 5600 ft)
7:26 am MDT Apr 13, 2026
9am MDT Apr 13, 2026-6pm MDT Apr 19, 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