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City of Wheaton, ILWheaton, IL 7-Day Night Weather Forecast
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Wheaton, IL Weather Forecast
Wheaton, IL Weather Forecast Date: 120 PM CDT Fri Sep 04 2026
The area/counties/county of: Dupage, including the cities of: Naperville, Wheaton, Downers Grove, Lombard, and Carol Stream.or toggle through each period.
This Afternoon... Mostly sunny. Highs in the lower 90s. South winds 10 to 15 mph. Heat index values up to 101.
Tonight... Partly cloudy. A slight chance of showers and thunderstorms late in the evening. A chance of showers and thunderstorms after midnight, then a slight chance of showers and thunderstorms late. Patchy fog late. Humid with lows in the lower 70s. West winds around 5 mph. Chance of precipitation 30%.
Saturday... Partly cloudy. Patchy fog early in the morning. Humid with highs in the mid 80s. North winds 5 to 10 mph.
Saturday Night... Partly cloudy in the evening, then clearing. Lows in the mid 60s. Northeast winds 5 to 10 mph.
Sunday... Mostly sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph.
Sunday Night... Mostly clear. Lows in the lower 60s.
Labor Day... Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 80s.
Monday Night... Partly cloudy. Lows in the mid 60s.
Tuesday... Partly cloudy in the morning, then becoming mostly cloudy. Highs in the upper 80s.
Tuesday Night... Partly cloudy. Lows in the lower 70s.
Wednesday... Mostly cloudy in the morning, then becoming partly cloudy. Highs in the upper 80s.
Wednesday Night... Partly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of precipitation 30%.
POP = Probability of Precipitation
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