I-90 weather conditions near Okaton, South Dakota
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fair 38°F 2025-10-12T22:55:00-06:00 
Tonight 2025-10-12, Frost. Widespread frost, mainly after 5am. Otherwise, clear, with a low around 34. Northwest wind 5 to 8 mph.Columbus Day 2025-10-13, Frost then Slight Chance Showers. A 20 percent chance of showers after 3pm. Widespread frost, mainly before 7am. Otherwise, increasing clouds, with a high near 56. Northwest wind 5 to 15 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph.
Monday Night 2025-10-13, Chance Showers. A 50 percent chance of showers. Cloudy, with a low around 42. East wind around 15 mph, with gusts as high as 21 mph.Tuesday 2025-10-14, Chance Showers then Cloudy. A 40 percent chance of showers before noon. Cloudy, with a high near 50. East wind 16 to 18 mph, with gusts as high as 28 mph.
Tuesday Night 2025-10-14, Mostly Cloudy then Slight Chance Showers. A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 42. East wind 14 to 17 mph, with gusts as high as 25 mph.
Wednesday 2025-10-15, Decreasing Clouds. Cloudy, then gradually becoming mostly sunny, with a high near 68. Southeast wind 14 to 18 mph, with gusts as high as 29 mph.- Wednesday Night 2025-10-15, Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. East wind 14 to 16 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%.
Thursday 2025-10-16, Chance Showers. A chance of showers, mainly before noon. Partly sunny, with a high near 65. West wind 14 to 17 mph, with gusts as high as 25 mph.
Thursday Night 2025-10-16, Chance Showers. A chance of showers, mainly before midnight. Partly cloudy, with a low around 41.
Friday 2025-10-17, Sunny. Sunny, with a high near 63.- Friday Night 2025-10-17, Partly Cloudy. Partly cloudy, with a low around 40.
Saturday 2025-10-18, Mostly Sunny and Breezy. Mostly sunny, with a high near 59. Breezy.
Saturday Night 2025-10-18, Mostly Clear. Mostly clear, with a low around 37.- Sunday 2025-10-19, Sunny. Sunny, with a high near 63.