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: Fair 67°F 2025-07-14T00:52:00-06:00 
Overnight 2025-07-14, Mostly Clear. Mostly clear, with a low around 64. Southwest wind around 5 mph.Monday 2025-07-14, Sunny then Isolated T-storms. Isolated showers and thunderstorms after 2pm. Sunny, with a high near 99. South wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Monday Night 2025-07-14, Scattered T-storms. Scattered showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 65. East wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 40%.Tuesday 2025-07-15, Slight Chance T-storms then Chance T-storms and Breezy. A 50 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 75. Breezy, with a northwest wind 5 to 10 mph becoming north 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night 2025-07-15, Showers Likely. Showers likely and possibly a thunderstorm. Cloudy, with a low around 54. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Wednesday 2025-07-16, Showers Likely. Showers likely and possibly a thunderstorm. Cloudy, with a high near 61. East wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.Wednesday Night 2025-07-16, Chance T-storms then Chance Showers. A chance of showers and thunderstorms. Cloudy, with a low around 51. Northeast wind 5 to 10 mph becoming east after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Thursday 2025-07-17, Decreasing Clouds. Cloudy, then gradually becoming mostly sunny, with a high near 76. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.- Thursday Night 2025-07-17, Partly Cloudy. Partly cloudy, with a low around 59.
Friday 2025-07-18, Mostly Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Friday Night 2025-07-18, Slight Chance T-storms. A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61.Saturday 2025-07-19, Partly Sunny then Chance T-storms. A chance of showers and thunderstorms. Mostly sunny, with a high near 85.
- Saturday Night 2025-07-19, Chance T-storms. A chance of showers and thunderstorms. Partly cloudy, with a low around 61.