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I-90 weather conditions near Spearfish, South Dakota

       Seasoned Weather Conditions

      

       Current Weather Conditions

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7 day weather forecast

  • Current condition: Partly Cloudy 39°F 2025-10-18T08:55:00-06:00
  • Today 2025-10-18, Breezy. Chance Showers then Sunny. A 30 percent chance of showers before 9am. Mostly sunny, with a high near 47. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 33 mph.
  • Tonight 2025-10-18, Mostly Clear. Mostly clear, with a low around 35. West wind around 11 mph becoming southwest after midnight. Winds could gust as high as 21 mph.
  • Sunday 2025-10-19, Increasing Clouds. Increasing clouds, with a high near 67. Southwest wind around 9 mph, with gusts as high as 18 mph.
  • Sunday Night 2025-10-19, Showers Likely and Breezy. Showers likely, mainly before midnight. Mostly cloudy, with a low around 39. Breezy, with a west wind 8 to 13 mph increasing to 16 to 21 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 60%.
  • Monday 2025-10-20, Chance Showers and Breezy. A 30 percent chance of showers. Mostly sunny, with a high near 49. Breezy, with a west wind 22 to 28 mph, with gusts as high as 38 mph.
  • Monday Night 2025-10-20, Mostly Clear and Breezy then Mostly Clear. Mostly clear, with a low around 35. Breezy, with a west wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
  • Tuesday 2025-10-21, Sunny. Sunny, with a high near 59. Southwest wind 6 to 9 mph, with gusts as high as 17 mph.
  • Tuesday Night 2025-10-21, Partly Cloudy. Partly cloudy, with a low around 40. Southwest wind around 7 mph.
  • Wednesday 2025-10-22, Sunny. Sunny, with a high near 62.
  • Wednesday Night 2025-10-22, Partly Cloudy. Partly cloudy, with a low around 42.
  • Thursday 2025-10-23, Sunny. Sunny, with a high near 65.
  • Thursday Night 2025-10-23, Mostly Clear. Mostly clear, with a low around 46.
  • Friday 2025-10-24, Sunny. Sunny, with a high near 71.





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