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Summit-Argo, IL 7-Day Night Weather Forecast
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Summit-Argo, IL Weather Forecast
Summit-Argo, IL Weather Forecast Date: 856 PM CDT Fri Sep 04 2026
The area/counties/county of: Central Cook, including the cities of: Chicago, Cicero, Oak Lawn, Oak Park, and La Grange.or toggle through each period.
Tonight... Partly cloudy. A slight chance of showers and thunderstorms early in the evening, then a chance of showers and thunderstorms in the late evening and early morning. A slight chance of showers and thunderstorms late. Patchy fog late. Lows in the mid 70s. Northwest winds around 5 mph, becoming northeast after midnight. Chance of precipitation 50%.
Saturday... Partly cloudy in the morning, then becoming mostly cloudy. Patchy fog early in the morning. Humid with highs in the mid 80s inland, but only around 80 near the lake. North winds 5 to 10 mph, increasing to northeast 10 to 15 mph in the afternoon.
Saturday Night... Partly cloudy in the evening, then clearing. Lows in the upper 60s. Northeast winds 5 to 10 mph.
Sunday... Mostly sunny. Highs in the upper 70s. Northeast winds 5 to 10 mph.
Sunday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s. Northeast winds 5 to 10 mph, becoming southeast after midnight.
Labor Day... Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 80s inland, but only in the upper 70s near the lake.
Monday Night... Mostly cloudy in the evening, then becoming 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 around 90.
Wednesday Night... Partly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of precipitation 30%.
Thursday... Partly cloudy. Highs in the lower 80s.
Thursday Night... Partly cloudy. Lows in the mid 60s.
POP = Probability of Precipitation
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