Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Current conditions at

Spearfish / Clyde Ice (KSPF)

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

Overcast

45°F

7°C

Humidity 93%
Wind Speed NW 3 mph
Barometer 29.89 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 11 Oct 7:35 am MDT
Extended Forecast for

2 Miles SSW Spearfish SD

  • Today

    Today: A 20 percent chance of showers.  Mostly cloudy, with a high near 59. Calm wind becoming east 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 59 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 50 percent chance of showers.  Mostly cloudy, with a low around 46. East wind 6 to 11 mph becoming light  after midnight. Winds could gust as high as 20 mph.

    Low: 46 °F

    Chance
    Showers

  • Columbus Day

    Columbus Day: A 20 percent chance of showers before noon.  Cloudy, then gradually becoming mostly sunny, with a high near 53. Light and variable wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 53 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of rain after midnight.  Mostly cloudy, with a low around 40. Northwest wind 6 to 11 mph becoming light and variable  in the evening. Winds could gust as high as 17 mph.

    Low: 40 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A 50 percent chance of rain.  Mostly cloudy, with a high near 55. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 55 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain.  Mostly cloudy, with a low around 42. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 42 °F

    Chance Rain

  • Wednesday

    Wednesday: A 50 percent chance of rain.  Mostly cloudy, with a high near 55.

    High: 55 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before midnight.  Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain Likely

  • Thursday

    Thursday: A chance of rain, mainly before noon.  Partly sunny, with a high near 55. Breezy.

    High: 55 °F

    Chance Rain
    and Breezy

Detailed Forecast

Today
A 20 percent chance of showers. Mostly cloudy, with a high near 59. Calm wind becoming east 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
A 50 percent chance of showers. Mostly cloudy, with a low around 46. East wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 20 mph.
Columbus Day
A 20 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 53. Light and variable wind becoming northwest 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Monday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 40. Northwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 17 mph.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 55. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 42. Northeast wind around 5 mph becoming calm in the evening.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 55.
Wednesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 42.
Thursday
A chance of rain, mainly before noon. Partly sunny, with a high near 55. Breezy.
Thursday Night
A slight chance of rain and snow before midnight, then a slight chance of snow between midnight and 3am, then a slight chance of rain and snow after 3am. Partly cloudy, with a low around 36. Breezy.
Friday
Mostly sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 68.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Spearfish SD
 44.48°N 103.88°W (Elev. 3898 ft)
6:21 am MDT Oct 11, 2026
7am MDT Oct 11, 2026-6pm MDT Oct 17, 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