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Tropical Depression Nine in the Gulf of America; California October Heat Wave Continues

Tropical Depression Nine is forecast to track toward the central U.S. Gulf Coast while strengthening into a tropical storm by early Wednesday and a hurricane on Thursday. Stay tuned to forecast updates. Much higher than typical October temperatures will continue across much of California through midweek. Temperatures are forecast to gradually cool beginning Thursday in Coastal California. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

50°F

10°C

Humidity 40%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 7 Oct 2:35 am MDT
Extended Forecast for

Lead SD

  • Today

    Today: Mostly sunny, with a high near 71. Light and variable wind becoming north around 6 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 71 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. East wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71. Calm wind becoming north around 5 mph. Winds could gust as high as 15 mph.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49. Calm wind becoming southwest around 6 mph after midnight. Winds could gust as high as 16 mph.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78. Southwest wind 5 to 8 mph, with gusts as high as 23 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. Light southwest wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 28 mph.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after midnight. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: A chance of rain. Partly sunny, with a high near 51.

    High: 51 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 71. Light and variable wind becoming north around 6 mph in the afternoon. Winds could gust as high as 16 mph.
Tonight
Partly cloudy, with a low around 46. East wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 71. Calm wind becoming north around 5 mph. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around 49. Calm wind becoming southwest around 6 mph after midnight. Winds could gust as high as 16 mph.
Friday
Sunny, with a high near 78. Southwest wind 5 to 8 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 56. Light southwest wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 28 mph.
Saturday
Sunny, with a high near 75.
Saturday Night
A slight chance of rain after midnight. Mostly cloudy, with a low around 43.
Sunday
A chance of rain. Partly sunny, with a high near 51.
Sunday Night
Rain likely. Mostly cloudy, with a low around 35.
Columbus Day
Rain and snow likely. Mostly cloudy, with a high near 48.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 35.
Tuesday
A chance of rain and snow. Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lead SD
 44.35°N 103.77°W (Elev. 5322 ft)
Last Update:
12:31 am MDT Oct 7, 2026
Forecast Valid:
4am MDT Oct 7, 2026-6pm MDT Oct 13, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation