I-90 weather conditions near New Underwood, South Dakota
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Partly Cloudy 57°F 2025-10-12T10:52:00-06:00
Today 2025-10-12, Sunny and Breezy. Sunny, with a steady temperature around 56. Breezy, with a northwest wind 22 to 28 mph, with gusts as high as 40 mph.
Tonight 2025-10-12, Mostly Clear and Blustery then Frost. Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 31. Blustery, with a northwest wind 15 to 20 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Columbus Day 2025-10-13, Frost then Mostly Sunny. Widespread frost, mainly before 7am. Otherwise, increasing clouds, with a high near 60. Southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Monday Night 2025-10-13, Mostly Cloudy then Chance Showers. A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 41. Southeast wind 15 to 17 mph, with gusts as high as 29 mph.
Tuesday 2025-10-14, Breezy. Slight Chance Showers then Mostly Cloudy. A 20 percent chance of showers before noon. Mostly cloudy, with a high near 55. Breezy, with a southeast wind 15 to 20 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. Mostly cloudy, with a low around 44. Southeast wind 13 to 16 mph, with gusts as high as 26 mph.
Wednesday 2025-10-15, Slight Chance Showers then Slight Chance T-storms. A slight chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 66. Southeast wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday Night 2025-10-15, Chance T-storms then Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Northeast wind 10 to 13 mph becoming west after midnight. Winds could gust as high as 21 mph.
Thursday 2025-10-16, Chance Showers. A chance of showers. Partly sunny, with a high near 62.
Thursday Night 2025-10-16, Slight Chance Showers then Partly Cloudy. A slight chance of showers before midnight. Partly cloudy, with a low around 38.
Friday 2025-10-17, Mostly Sunny. Mostly sunny, with a high near 64.
Friday Night 2025-10-17, Partly Cloudy then Slight Chance Showers. A slight chance of showers. Partly cloudy, with a low around 39.
Saturday 2025-10-18, Slight Chance Showers and Breezy. A slight chance of showers. Mostly sunny, with a high near 59. Breezy.
Current condition: Partly Cloudy 57°F 2025-10-12T10:52:00-06:00 
Today 2025-10-12, Sunny and Breezy. Sunny, with a steady temperature around 56. Breezy, with a northwest wind 22 to 28 mph, with gusts as high as 40 mph.Tonight 2025-10-12, Mostly Clear and Blustery then Frost. Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 31. Blustery, with a northwest wind 15 to 20 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Monday Night 2025-10-13, Mostly Cloudy then Chance Showers. A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 41. Southeast wind 15 to 17 mph, with gusts as high as 29 mph.
Tuesday 2025-10-14, Breezy. Slight Chance Showers then Mostly Cloudy. A 20 percent chance of showers before noon. Mostly cloudy, with a high near 55. Breezy, with a southeast wind 15 to 20 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. Mostly cloudy, with a low around 44. Southeast wind 13 to 16 mph, with gusts as high as 26 mph.
Wednesday 2025-10-15, Slight Chance Showers then Slight Chance T-storms. A slight chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 66. Southeast wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday Night 2025-10-15, Chance T-storms then Chance Showers. A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Northeast wind 10 to 13 mph becoming west after midnight. Winds could gust as high as 21 mph.
Thursday 2025-10-16, Chance Showers. A chance of showers. Partly sunny, with a high near 62.Thursday Night 2025-10-16, Slight Chance Showers then Partly Cloudy. A slight chance of showers before midnight. Partly cloudy, with a low around 38.
Friday Night 2025-10-17, Partly Cloudy then Slight Chance Showers. A slight chance of showers. Partly cloudy, with a low around 39.
Saturday 2025-10-18, Slight Chance Showers and Breezy. A slight chance of showers. Mostly sunny, with a high near 59. Breezy.