I-90 weather conditions near Rapid City, South Dakota
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Mostly Cloudy 49°F 2025-10-14T00:52:00-06:00 
Overnight 2025-10-14, Cloudy. Cloudy, with a low around 41. Southeast wind 13 to 15 mph, with gusts as high as 22 mph.Tuesday 2025-10-14, Slight Chance Showers then Partly Sunny. A 20 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 60. Southeast wind 13 to 18 mph, with gusts as high as 30 mph.
Tuesday Night 2025-10-14, Mostly Cloudy then Slight Chance Showers. A 20 percent chance of showers after midnight. Increasing clouds, with a low around 45. Southeast wind 6 to 11 mph, with gusts as high as 21 mph.
Wednesday 2025-10-15, Chance Showers. A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 60. East wind 6 to 9 mph, with gusts as high as 17 mph. Chance of precipitation is 30%.
Wednesday Night 2025-10-15, Showers Likely. Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 48. Northeast wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Thursday 2025-10-16, Chance Showers. A 50 percent chance of showers. Mostly cloudy, with a high near 61. Northwest wind 10 to 13 mph, with gusts as high as 24 mph.Thursday Night 2025-10-16, Chance Showers then Partly Cloudy. A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 39. Northwest wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.
Friday 2025-10-17, Mostly Sunny. Mostly sunny, with a high near 64. Southwest wind 7 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.
Friday Night 2025-10-17, Partly Cloudy. Partly cloudy, with a low around 39.Saturday 2025-10-18, Breezy. Slight Chance Rain then Mostly Sunny. A slight chance of rain before noon. Mostly sunny, with a high near 58. Breezy.
Saturday Night 2025-10-18, Mostly Clear. Mostly clear, with a low around 36.
Sunday 2025-10-19, Sunny. Sunny, with a high near 69.- Sunday Night 2025-10-19, Mostly Clear. Mostly clear, with a low around 43.
Monday 2025-10-20, Mostly Sunny and Breezy. Mostly sunny, with a high near 68. Breezy.