I-90 weather conditions near Spearfish, South Dakota
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fair and Breezy 59°F 2025-12-14T12:55:00-07:00 
This Afternoon 2025-12-14, Sunny. Sunny, with a high near 65. Southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Tonight 2025-12-14, Mostly Clear. Mostly clear, with a low around 38. Southwest wind 10 to 15 mph, with gusts as high as 21 mph.- Monday 2025-12-15, Sunny. Sunny, with a high near 62. Southwest wind 7 to 10 mph, with gusts as high as 16 mph.
Monday Night 2025-12-15, Mostly Cloudy. Mostly cloudy, with a low around 41. Southwest wind around 15 mph, with gusts as high as 24 mph.
Tuesday 2025-12-16, Mostly Sunny. Mostly sunny, with a temperature rising to near 52 by 11am, then falling to around 41 during the remainder of the day. Northwest wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday Night 2025-12-16, Partly Cloudy. Partly cloudy, with a steady temperature around 39. Southwest wind 9 to 14 mph, with gusts as high as 23 mph.
Wednesday 2025-12-17, Rain Likely and Breezy. Rain likely after 11am. Partly sunny, with a high near 56. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 60%.
Wednesday Night 2025-12-17, Snow Likely and Windy. Snow likely, mainly before 11pm. Mostly cloudy, with a low around 18. Windy, with a west wind 22 to 30 mph, with gusts as high as 45 mph.- Thursday 2025-12-18, Mostly Sunny. Mostly sunny, with a high near 34.
Thursday Night 2025-12-18, Slight Chance Snow then Slight Chance Rain/Snow. A slight chance of snow before 1am, then a slight chance of rain and snow between 1am and 3am, then a slight chance of rain after 3am. Mostly cloudy, with a low around 25.
Friday 2025-12-19, Slight Chance Rain. A slight chance of rain. Mostly cloudy, with a high near 53.Friday Night 2025-12-19, Chance Rain/Snow then Chance Snow. A chance of rain and snow. Mostly cloudy, with a low around 29.
Saturday 2025-12-20, Chance Snow. A chance of snow. Partly sunny, with a high near 40.