I-39 weather conditions near Portage, Wisconsin

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Overcast 52°F 2025-10-15T22:35:00-05:00
• Tonight 2025-10-15, Mostly Cloudy then Patchy Fog. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 47. East wind around 5 mph becoming calm.
• Thursday 2025-10-16, Chance Showers and Patchy Fog. A 50 percent chance of showers, mainly after 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 65. Southeast wind 5 to 10 mph.
• Thursday Night 2025-10-16, Chance Showers. A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 54. Southeast wind 5 to 10 mph.
• Friday 2025-10-17, Partly Sunny. Partly sunny, with a high near 76. South wind 10 to 15 mph.
• Friday Night 2025-10-17, Chance Showers then Showers. A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 57. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
• Saturday 2025-10-18, Showers Likely. Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
• Saturday Night 2025-10-18, Chance T-storms then Chance Showers. A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 42. West wind 5 to 10 mph. Chance of precipitation is 50%.
• Sunday 2025-10-19, Slight Chance Showers and Breezy. A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 59. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
• Sunday Night 2025-10-19, Mostly Clear. Mostly clear, with a low around 38.
• Monday 2025-10-20, Sunny. Sunny, with a high near 63.
• Monday Night 2025-10-20, Mostly Clear then Slight Chance Showers. A 20 percent chance of showers. Partly cloudy, with a low around 42.
• Tuesday 2025-10-21, Slight Chance Showers. A 20 percent chance of showers. Mostly sunny, with a high near 62.
• Tuesday Night 2025-10-21, Slight Chance T-storms then Chance Showers. A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 40.
• Wednesday 2025-10-22, Slight Chance Showers. A 20 percent chance of showers. Mostly sunny, with a high near 60.