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City of Portage, INPortage, IN 7-Day Night Weather Forecast
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Portage, IN Weather Forecast
Portage, IN Weather Forecast Date: 1051 AM CDT Thu Sep 17 2026
The area/counties/county of: Porter, including the cities of: Portage, Valparaiso, and Chesterton.or toggle through each period.
Rest of Today... Mostly cloudy. Showers likely and a slight chance of thunderstorms late in the morning. A slight chance of showers and thunderstorms late. Highs in the upper 70s inland, but only in the mid 70s near the lake. West winds around 5 mph, becoming northwest in the afternoon. Chance of precipitation 70%.
Tonight... Mostly cloudy. Lows in the mid 60s. Northeast winds around 5 mph.
Friday... Mostly cloudy. Highs in the mid 70s. East winds 5 to 10 mph.
Friday Night... Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 60s. Southeast winds around 10 mph. Chance of precipitation 50%.
Saturday... A slight chance of thunderstorms in the morning. Showers likely. A chance of thunderstorms in the afternoon. Highs in the lower 80s. South winds 5 to 10 mph. Chance of precipitation 70%.
Saturday Night... A chance of thunderstorms. Showers. Lows in the mid 60s. Chance of precipitation 80%.
Sunday... A slight chance of thunderstorms in the morning. Mostly cloudy with a chance of showers. Highs in the lower 70s. Chance of precipitation 50%.
Sunday Night... Mostly cloudy with a chance of showers. A slight chance of thunderstorms after midnight. Lows in the upper 50s. Chance of precipitation 50%.
Monday... Mostly cloudy with a chance of showers. Highs in the upper 60s. Chance of precipitation 50%.
Monday Night... Mostly cloudy. Lows in the mid 50s.
Tuesday... Mostly cloudy. Highs around 70.
Tuesday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 50s.
POP = Probability of Precipitation
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