I-90 weather conditions near Rapid City, South Dakota

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: A Few Clouds 49°F 2025-10-20T01:52:00-06:00
• Overnight 2025-10-20, Partly Cloudy and Breezy. Partly cloudy, with a low around 43. Breezy, with a northwest wind 21 to 24 mph, with gusts as high as 43 mph.
• Monday 2025-10-20, Mostly Sunny and Windy. Mostly sunny, with a high near 55. Windy, with a northwest wind 23 to 28 mph increasing to 33 to 38 mph in the afternoon. Winds could gust as high as 55 mph.
• Monday Night 2025-10-20, Mostly Clear and Breezy. Mostly clear, with a low around 34. Breezy, with a northwest wind 23 to 28 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 41 mph.
• Tuesday 2025-10-21, Sunny. Sunny, with a high near 61. Northwest wind 7 to 11 mph, with gusts as high as 23 mph.
• Tuesday Night 2025-10-21, Mostly Clear. Mostly clear, with a low around 36. West wind 6 to 8 mph, with gusts as high as 15 mph.
• Wednesday 2025-10-22, Sunny. Sunny, with a high near 62. West wind 6 to 8 mph becoming east in the afternoon. Winds could gust as high as 17 mph.
• Wednesday Night 2025-10-22, Mostly Clear. Mostly clear, with a low around 35. East wind around 7 mph becoming southwest after midnight.
• Thursday 2025-10-23, Mostly Sunny. Mostly sunny, with a high near 64. Southwest wind 7 to 11 mph becoming east in the afternoon. Winds could gust as high as 23 mph.
• Thursday Night 2025-10-23, Partly Cloudy. Partly cloudy, with a low around 38.
• Friday 2025-10-24, Sunny. Sunny, with a high near 67.
• Friday Night 2025-10-24, Partly Cloudy. Partly cloudy, with a low around 42.
• Saturday 2025-10-25, Mostly Sunny. Mostly sunny, with a high near 72.
• Saturday Night 2025-10-25, Mostly Cloudy. Mostly cloudy, with a low around 44.
• Sunday 2025-10-26, Partly Sunny then Slight Chance Showers. A slight chance of showers. Partly sunny, with a high near 62.