I-90 weather conditions near Rapid City, South Dakota

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Overcast 28°F 2025-11-27T19:52:00-07:00
• Tonight 2025-11-27, Chance Snow. A 30 percent chance of snow, mainly between 11pm and 2am. Mostly cloudy, with a low around 21. Wind chill values as low as 10. Southeast wind 8 to 10 mph, with gusts as high as 20 mph.
• Friday 2025-11-28, Mostly Cloudy then Chance Snow. A 30 percent chance of snow after 5pm. Mostly cloudy, with a high near 37. Wind chill values as low as 11. Southeast wind 8 to 10 mph becoming north in the afternoon. Winds could gust as high as 17 mph.
• Friday Night 2025-11-28, Snow and Blustery. Snow, mainly after 8pm. Low around 15. Wind chill values as low as -3. Blustery, with a north wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
• Saturday 2025-11-29, Chance Snow and Patchy Blowing Snow. A 50 percent chance of snow, mainly before 11am. Patchy blowing snow between 8am and 11am. Partly sunny, with a high near 24. Wind chill values as low as -3. Blustery, with a north wind 13 to 23 mph, with gusts as high as 40 mph. New snow accumulation of less than a half inch possible.
• Saturday Night 2025-11-29, Partly Cloudy. Partly cloudy, with a low around 4. Northwest wind 5 to 8 mph becoming light and variable. Winds could gust as high as 15 mph.
• Sunday 2025-11-30, Mostly Sunny. Mostly sunny, with a high near 23. Southwest wind 5 to 9 mph becoming southeast in the afternoon. Winds could gust as high as 17 mph.
• Sunday Night 2025-11-30, Partly Cloudy. Partly cloudy, with a low around 7. South wind around 7 mph becoming west after midnight.
• Monday 2025-12-01, Sunny. Sunny, with a high near 37. Northwest wind 6 to 9 mph, with gusts as high as 18 mph.
• Monday Night 2025-12-01, Partly Cloudy. Partly cloudy, with a low around 20.
• Tuesday 2025-12-02, Slight Chance Snow then Chance Rain/Snow. A slight chance of rain and snow before 1pm, then a slight chance of rain between 1pm and 3pm, then a chance of rain and snow after 3pm. Partly sunny, with a high near 45.
• Tuesday Night 2025-12-02, Chance Snow. A chance of snow. Mostly cloudy, with a low around 22.
• Wednesday 2025-12-03, Chance Snow. A chance of snow. Mostly cloudy, with a high near 34.
• Wednesday Night 2025-12-03, Slight Chance Snow then Partly Cloudy. A slight chance of snow. Partly cloudy, with a low around 15.
• Thursday 2025-12-04, Mostly Sunny then Slight Chance Snow. A slight chance of snow. Mostly sunny, with a high near 42.