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 81°F 2025-06-19T09:35:00-06:00 
Juneteenth 2025-06-19, Sunny. Sunny, with a high near 89. North wind around 5 mph, with gusts as high as 15 mph.
Tonight 2025-06-19, Partly Cloudy. Partly cloudy, with a low around 64. East wind around 5 mph becoming west after midnight.- Friday 2025-06-20, Sunny. Sunny, with a high near 94. West wind 5 to 15 mph becoming southeast in the morning. Winds could gust as high as 25 mph.
Friday Night 2025-06-20, Mostly Clear. Mostly clear, with a low around 67. West wind 5 to 15 mph becoming south in the evening. Winds could gust as high as 20 mph.- Saturday 2025-06-21, Sunny. Sunny, with a high near 91. Southwest wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Saturday Night 2025-06-21, Mostly Clear then Chance Showers. A 30 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 56. Northeast wind around 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Sunday 2025-06-22, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 68. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night 2025-06-22, Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.Monday 2025-06-23, Partly Sunny then Chance Showers. A chance of showers and thunderstorms after noon. Partly sunny, with a high near 64.
Monday Night 2025-06-23, Slight Chance T-storms then Chance Showers. A slight chance of showers and thunderstorms, then a chance of showers after midnight. Partly cloudy, with a low around 51.
Tuesday 2025-06-24, Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny, with a high near 68.- Tuesday Night 2025-06-24, Showers Likely. Showers and thunderstorms likely. Mostly cloudy, with a low around 52.
- Wednesday 2025-06-25, Showers Likely. Showers and thunderstorms likely. Partly sunny, with a high near 69.