I-90 weather conditions near Portage, Wisconsin
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fog/Mist 60°F 2025-10-18T08:15:00-05:00 
Today 2025-10-18, Sunny. Sunny, with a high near 73. Southwest wind 5 to 10 mph.Tonight 2025-10-18, Slight Chance Showers then Showers Likely. Showers likely, mainly after 3am. Increasing clouds, with a low around 46. Northwest wind 5 to 10 mph increasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday 2025-10-19, Chance Showers. A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 58. Northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night 2025-10-19, Clear then Areas Frost. Areas of frost after 5am. Otherwise, clear, with a low around 35. West wind 5 to 10 mph becoming southwest after midnight.Monday 2025-10-20, Areas Frost then Slight Chance Showers. A 20 percent chance of showers after 1pm. Areas of frost before 8am. Otherwise, increasing clouds, with a high near 65. South wind 5 to 15 mph.
Monday Night 2025-10-20, Chance Showers. A 50 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 40. West wind 10 to 15 mph.
Tuesday 2025-10-21, Slight Chance Showers and Breezy. A 20 percent chance of showers. Partly sunny, with a high near 49. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night 2025-10-21, Mostly Cloudy then Areas Frost. Areas of frost after 5am. Otherwise, partly cloudy, with a low around 35. Northwest wind 10 to 15 mph.
Wednesday 2025-10-22, Areas Frost then Mostly Sunny. Areas of frost before 8am. Otherwise, mostly sunny, with a high near 55.- Wednesday Night 2025-10-22, Partly Cloudy then Areas Frost. Areas of frost after 4am. Otherwise, partly cloudy, with a low around 33.
- Thursday 2025-10-23, Areas Frost then Sunny. Areas of frost. Otherwise, sunny, with a high near 61.
- Thursday Night 2025-10-23, Partly Cloudy. Partly cloudy, with a low around 38.
- Friday 2025-10-24, Mostly Sunny. Mostly sunny, with a high near 65.