Tropical Storm Isaias in the Gulf; California Heat Continues

Tropical Storm Isaias is forecast to track toward the central U.S. Gulf Coast while strengthening into a hurricane on Thursday. Residents from Louisiana to the Florida Panhandle should closely monitor the latest updates. Much higher than typical October temperatures will continue across much of California through midweek. Temperatures are forecast to gradually cool beginning Thursday. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Fair

52°F

11°C

Humidity 38%
Wind Speed Calm
Barometer 30.16 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 7 Oct 7:35 am MDT
Extended Forecast for

2 Miles SE Saint Onge SD

  • Today

    Today: Mostly sunny, with a high near 75. West wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 18 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Northeast wind 5 to 9 mph becoming southeast after midnight. Winds could gust as high as 15 mph.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 73. Calm wind becoming northeast 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 73 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 52. East wind 6 to 8 mph becoming southwest in the evening.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 84. South wind 5 to 11 mph, with gusts as high as 25 mph.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Breezy, with a south wind 6 to 11 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 31 mph.

    Low: 61 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 80. Breezy.

    High: 80 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: A slight chance of rain after midnight.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: A chance of rain.  Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 75. West wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 18 mph.
Tonight
Partly cloudy, with a low around 47. Northeast wind 5 to 9 mph becoming southeast after midnight. Winds could gust as high as 15 mph.
Thursday
Sunny, with a high near 73. Calm wind becoming northeast 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.
Thursday Night
Partly cloudy, with a low around 52. East wind 6 to 8 mph becoming southwest in the evening.
Friday
Sunny, with a high near 84. South wind 5 to 11 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 61. Breezy, with a south wind 6 to 11 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 31 mph.
Saturday
Sunny, with a high near 80. Breezy.
Saturday Night
A slight chance of rain after midnight. Mostly cloudy, with a low around 48.
Sunday
A chance of rain. Mostly cloudy, with a high near 53.
Sunday Night
Rain likely. Mostly cloudy, with a low around 39.
Columbus Day
Rain likely. Mostly cloudy, with a high near 50.
Monday Night
A chance of rain. Mostly cloudy, with a low around 39.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Saint Onge SD
 44.55°N 103.73°W (Elev. 3442 ft)
6:56 am MDT Oct 7, 2026
8am MDT Oct 7, 2026-6pm MDT Oct 13, 2026
 
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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