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Chesterton, IN 7-Day Night Weather Forecast
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Chesterton, IN Weather Forecast
Chesterton, IN Weather Forecast Date: 906 AM CDT Tue Sep 15 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 late in the morning, then becoming partly cloudy. Isolated thunderstorms late in the morning. Scattered showers. Scattered thunderstorms in the afternoon. Highs in the mid 80s inland, but only in the upper 70s near the lake. Southwest winds 5 to 10 mph. Chance of precipitation 50%.
Tonight... A chance of thunderstorms early in the evening. Showers likely. A slight chance of thunderstorms in the late evening and overnight. Humid with lows in the mid 60s. North winds around 5 mph. Chance of precipitation 70%.
Wednesday... Mostly cloudy. A chance of showers with a slight chance of thunderstorms. Humid with highs in the upper 70s. Northeast winds around 5 mph. Chance of precipitation 50%.
Wednesday Night... Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the mid 60s. East winds around 5 mph, becoming south after midnight. Chance of precipitation 60%.
Thursday... Mostly cloudy. Showers likely in the morning. A slight chance of thunderstorms. A chance of showers in the afternoon. Humid with 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 60%.
Thursday Night... Mostly cloudy. A slight chance of showers after midnight. Lows in the lower 60s. Chance of precipitation 20%.
Friday... Mostly cloudy with a 20% chance of showers. Highs in the upper 70s.
Friday Night... Mostly cloudy in the evening, then partly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 60s. Chance of precipitation 30%.
Saturday... Mostly cloudy in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of precipitation 40%.
Saturday Night... Showers likely. Lows in the mid 60s. Chance of precipitation 70%.
Sunday... Mostly cloudy with a chance of showers. Highs in the mid 70s. Chance of precipitation 40%.
Sunday Night... Mostly cloudy. A chance of showers in the evening. Lows in the mid 50s. Chance of precipitation 30%.
POP = Probability of Precipitation
Chesterton Radar Loop
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