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 63°F 2025-06-20T01:15:00-06:00 - Overnight 2025-06-20, Partly Cloudy. Partly cloudy, with a low around 62. Southwest wind around 5 mph.
Friday 2025-06-20, Sunny. Sunny, with a high near 96. South wind 5 to 10 mph becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night 2025-06-20, Mostly Clear. Mostly clear, with a low around 64. West wind 5 to 10 mph becoming south in the evening. Winds could gust as high as 20 mph.- Saturday 2025-06-21, Sunny. Sunny, with a high near 87. Southwest wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Saturday Night 2025-06-21, 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 55. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday 2025-06-22, Slight Chance Showers then Slight Chance T-storms. A slight chance of showers, with thunderstorms also possible after 3pm. Mostly sunny, with a high near 69. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Sunday Night 2025-06-22, Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Northwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Monday 2025-06-23, Mostly Sunny. Mostly sunny, with a high near 69. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Monday Night 2025-06-23, Chance T-storms. A chance of showers and thunderstorms, mainly after midnight. Partly cloudy, with a low around 52.
Tuesday 2025-06-24, Showers Likely. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 72.
Tuesday Night 2025-06-24, Showers Likely. Showers and thunderstorms likely. Mostly cloudy, with a low around 54.- Wednesday 2025-06-25, Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny, with a high near 72.
Wednesday Night 2025-06-25, Chance T-storms then Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Thursday 2025-06-26, Slight Chance Showers then Chance T-storms. A chance of showers and thunderstorms. Sunny, with a high near 77.