Weather forecast for: Portage WI
Last Update: 6:11 pm CDT Sep 2, 2026
Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 68. West wind around 5 mph becoming calm.
Thursday: Showers and thunderstorms likely, mainly before 3pm. Partly sunny, with a high near 83. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 67. East wind around 5 mph becoming calm. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 85. Calm wind becoming southeast around 5 mph. Chance of precipitation is 30%.
Friday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. Calm wind.
Saturday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night: Partly cloudy, with a low around 63. East wind around 5 mph becoming calm after midnight.
Sunday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Labor Day: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 79.
Monday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Tuesday: A 30 percent chance of showers. Partly sunny, with a high near 78.
Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Wednesday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
WeatherWorld.com
