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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

57°F

14°C

Humidity 59%
Wind Speed NW 9 G 15 mph
Barometer 29.93 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 17 Jun 8:35 pm MDT
Extended Forecast for

Spearfish SD

  • Tonight

    Tonight: A chance of sprinkles before 9pm. Mostly clear, with a low around 49. West wind 6 to 13 mph, with gusts as high as 29 mph.

    Low: 49 °F

    Chance
    Sprinkles

  • Thursday

    Thursday: A 30 percent chance of showers, mainly between noon and 3pm. Mostly sunny, with a high near 71. Northwest wind 7 to 11 mph, with gusts as high as 23 mph.

    High: 71 °F

    Sunny then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 51. North wind 5 to 8 mph becoming light and variable. Winds could gust as high as 20 mph.

    Low: 51 °F

    Chance
    Showers then
    Mostly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 74. West wind 6 to 13 mph becoming northeast in the afternoon. Winds could gust as high as 18 mph.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after midnight. Partly cloudy, with a low around 54. Northeast wind 8 to 10 mph becoming southeast in the evening. Winds could gust as high as 18 mph.

    Low: 54 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76. East wind 11 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.

    High: 76 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 54. Chance of precipitation is 90%.

    Low: 54 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 67.

    High: 67 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A chance of sprinkles before 9pm. Mostly clear, with a low around 49. West wind 6 to 13 mph, with gusts as high as 29 mph.
Thursday
A 30 percent chance of showers, mainly between noon and 3pm. Mostly sunny, with a high near 71. Northwest wind 7 to 11 mph, with gusts as high as 23 mph.
Thursday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 51. North wind 5 to 8 mph becoming light and variable. Winds could gust as high as 20 mph.
Juneteenth
Mostly sunny, with a high near 74. West wind 6 to 13 mph becoming northeast in the afternoon. Winds could gust as high as 18 mph.
Friday Night
A 30 percent chance of showers after midnight. Partly cloudy, with a low around 54. Northeast wind 8 to 10 mph becoming southeast in the evening. Winds could gust as high as 18 mph.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76. East wind 11 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 70%.
Saturday Night
Showers and possibly a thunderstorm. Low around 54. Chance of precipitation is 90%.
Sunday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 67.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 50.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 68.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 50.
Tuesday
A chance of showers and thunderstorms. Sunny, with a high near 72.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 52.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 77.
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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:
7:37 pm MDT Jun 17, 2026
Forecast Valid:
8pm MDT Jun 17, 2026-6pm MDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation