I-39 weather conditions near Portage, Wisconsin
Roadnow AI Agent Live Update
Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fair 52°F 2025-10-19T10:35:00-05:00 
Today 2025-10-19, Becoming Sunny and Breezy. Partly sunny, then gradually becoming sunny, with a high near 56. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight 2025-10-19, Clear then Areas Frost. Areas of frost after 4am. Otherwise, clear, with a low around 36. West wind 5 to 10 mph becoming southwest after midnight.- Monday 2025-10-20, Areas Frost then Mostly Sunny. Areas of frost before 8am. Otherwise, increasing clouds, with a high near 66. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Monday Night 2025-10-20, Showers Likely. Showers likely, mainly before 1am. Mostly cloudy, with a low around 43. South wind 10 to 15 mph becoming west after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday 2025-10-21, Chance Showers and Breezy. A 50 percent chance of showers. Partly sunny, with a high near 50. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night 2025-10-21, Chance Showers. A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 39. West wind around 15 mph, with gusts as high as 30 mph.
Wednesday 2025-10-22, Partly Sunny. Partly sunny, with a high near 51. Northwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday Night 2025-10-22, Partly Cloudy then Areas Frost. Areas of frost after 3am. Otherwise, partly cloudy, with a low around 33. West wind 5 to 10 mph.
Thursday 2025-10-23, Frost then Sunny. Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 53.
Thursday Night 2025-10-23, Frost. Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 29.- Friday 2025-10-24, Frost then Mostly Sunny. Widespread frost. Otherwise, mostly sunny, with a high near 54.
- Friday Night 2025-10-24, Partly Cloudy then Frost. Widespread frost. Otherwise, partly cloudy, with a low around 32.
- Saturday 2025-10-25, Frost then Mostly Sunny. Widespread frost. Otherwise, mostly sunny, with a high near 56.