National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Areas of Fire Weather, Winter Weather, and Severe Weather Thursday

Continuation of gusty winds and low relative humidity will additional periods of critical fire weather to the southern Plains Thursday and Friday. Another Pacific storm will continue gusty winds and heavy snow over the western mountains into Thursday. Severe thunderstorms are possible across parts of the middle Mississippi into lower Ohio Valleys Thursday afternoon into early evening. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Overcast

14°F

-10°C

Humidity 79%
Wind Speed NW 7 mph
Barometer 29.68 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 18 Feb 7:15 pm MST
Extended Forecast for

Spearfish SD

Winter Weather Advisory February 18, 11:00pm until February 19, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Snow likely, mainly after 1am. Mostly cloudy, with a low around 7. Wind chill values as low as -5. North wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.

    Low: 7 °F

    Slight Chance
    Snow then
    Snow Likely

  • Thursday

    Thursday: Snow. High near 18. Wind chill values as low as -5. Northwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 18 °F

    Snow

  • Thursday Night

    Thursday Night: A 40 percent chance of snow before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 5. Northwest wind around 6 mph becoming calm in the evening. New snow accumulation of less than a half inch possible.

    Low: 5 °F

    Chance Snow
    then Partly
    Cloudy

  • Friday

    Friday: A 20 percent chance of snow after 11am. Mostly sunny, with a high near 29. Wind chill values as low as 7. Calm wind becoming northwest around 6 mph in the morning.

    High: 29 °F

    Slight Chance
    Snow

  • Friday Night

    Friday Night: Partly cloudy, with a low around 12. Light southwest wind.

    Low: 12 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 35. Light and variable wind becoming northwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 35 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 12. Northwest wind around 5 mph becoming calm in the evening.

    Low: 12 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 36. Calm wind becoming east 5 to 8 mph in the morning. Winds could gust as high as 16 mph.

    High: 36 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow likely, mainly after 1am. Mostly cloudy, with a low around 7. Wind chill values as low as -5. North wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.
Thursday
Snow. High near 18. Wind chill values as low as -5. Northwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Thursday Night
A 40 percent chance of snow before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 5. Northwest wind around 6 mph becoming calm in the evening. New snow accumulation of less than a half inch possible.
Friday
A 20 percent chance of snow after 11am. Mostly sunny, with a high near 29. Wind chill values as low as 7. Calm wind becoming northwest around 6 mph in the morning.
Friday Night
Partly cloudy, with a low around 12. Light southwest wind.
Saturday
Mostly sunny, with a high near 35. Light and variable wind becoming northwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 12. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 36. Calm wind becoming east 5 to 8 mph in the morning. Winds could gust as high as 16 mph.
Sunday Night
Partly cloudy, with a low around 20.
Monday
Sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
A slight chance of rain. Partly sunny, with a high near 53.
Tuesday Night
A chance of snow. Partly cloudy, with a low around 29.
Wednesday
A chance of snow. Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Spearfish SD
 44.48°N 103.85°W (Elev. 3780 ft)
Last Update:
6:26 pm MST Feb 18, 2026
Forecast Valid:
7pm MST Feb 18, 2026-6pm MST Feb 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation