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

Arctic Front Brings Winter Weather and Colder Temperatures to the Eastern U.S.

A series of cold fronts will bring heavy lake effect snow to the northern Great Lakes. The fronts will merge over the Ohio Valley and bring colder temperatures east of the Mississippi River later today into the end of the week. Additionally, wintry weather will develop over the Ohio Valley, Appalachians, and Northeast as rain switches over to snow tonight into Thursday morning. Read More >

Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

50°F

10°C

Humidity 37%
Wind Speed NW 8 mph
Barometer 30.21 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 14 Jan 1:15 pm MST
Extended Forecast for

Spearfish SD

High Wind Watch January 15, 11:00am until January 16, 05:00pm
Click here for hazard details and duration
High Wind Watch

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 49. Light southwest wind becoming west 5 to 9 mph. Winds could gust as high as 16 mph.

    High: 49 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 37. Breezy, with a west wind 10 to 20 mph, with gusts as high as 25 mph.

    Low: 37 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Thursday

    Thursday: A slight chance of rain between 11am and 3pm, then a slight chance of snow after 3pm. Partly sunny, with a temperature rising to near 44 by noon, then falling to around 33 during the remainder of the day. Wind chill values as low as 19. Windy, with a west wind 20 to 30 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.

    High: 44 °F⇓

    Slight Chance
    Rain/Snow and
    Windy

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 20. Wind chill values as low as 1. Very windy, with a northwest wind 31 to 36 mph increasing to 38 to 43 mph after midnight. Winds could gust as high as 60 mph. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Chance Snow
    and Very
    Windy

  • Friday

    Friday: A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a steady temperature around 22. Very windy, with a northwest wind 39 to 44 mph decreasing to 31 to 36 mph in the afternoon. Winds could gust as high as 60 mph.

    High: 22 °F

    Chance Snow
    and Very
    Windy

  • Friday Night

    Friday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 11. Blustery, with a northwest wind 23 to 25 mph, with gusts as high as 39 mph.

    Low: 11 °F

    Chance Snow
    and Blustery

  • Saturday

    Saturday: Mostly sunny, with a high near 33. Breezy, with a northwest wind 14 to 22 mph, with gusts as high as 37 mph.

    High: 33 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 22. Breezy, with a west wind 14 to 23 mph, with gusts as high as 38 mph.

    Low: 22 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Sunday

    Sunday: Partly sunny, with a high near 39. Windy.

    High: 39 °F

    Partly Sunny
    and Windy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 49. Light southwest wind becoming west 5 to 9 mph. Winds could gust as high as 16 mph.
Tonight
Mostly clear, with a low around 37. Breezy, with a west wind 10 to 20 mph, with gusts as high as 25 mph.
Thursday
A slight chance of rain between 11am and 3pm, then a slight chance of snow after 3pm. Partly sunny, with a temperature rising to near 44 by noon, then falling to around 33 during the remainder of the day. Wind chill values as low as 19. Windy, with a west wind 20 to 30 mph, with gusts as high as 39 mph. Chance of precipitation is 20%.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 20. Wind chill values as low as 1. Very windy, with a northwest wind 31 to 36 mph increasing to 38 to 43 mph after midnight. Winds could gust as high as 60 mph. New snow accumulation of less than a half inch possible.
Friday
A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a steady temperature around 22. Very windy, with a northwest wind 39 to 44 mph decreasing to 31 to 36 mph in the afternoon. Winds could gust as high as 60 mph.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 11. Blustery, with a northwest wind 23 to 25 mph, with gusts as high as 39 mph.
Saturday
Mostly sunny, with a high near 33. Breezy, with a northwest wind 14 to 22 mph, with gusts as high as 37 mph.
Saturday Night
Partly cloudy, with a low around 22. Breezy, with a west wind 14 to 23 mph, with gusts as high as 38 mph.
Sunday
Partly sunny, with a high near 39. Windy.
Sunday Night
Mostly cloudy, with a low around 19.
M.L.King Day
Partly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Spearfish SD
 44.5°N 103.85°W (Elev. 3911 ft)
Last Update:
1:21 pm MST Jan 14, 2026
Forecast Valid:
1pm MST Jan 14, 2026-6pm MST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation