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Cook County, IL Weather Forecast
Cook County, IL Weather Forecast Date: 829 PM CST Mon Mar 02 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.
Rest of Tonight... Partly cloudy early in the evening, then becoming mostly cloudy. Near steady temperature in the mid 30s. East winds 5 to 10 mph.
Tuesday... Cloudy. A chance of rain, mainly in the morning. Highs in the lower 40s. East winds around 5 mph. Chance of precipitation 50%.
Tuesday Night... Mostly cloudy. A slight chance of rain showers. Lows in the mid 30s. Northeast winds around 5 mph. Chance of precipitation 20%.
Wednesday... Mostly cloudy. A chance of rain showers. Highs in the upper 40s inland, but only in the lower 40s near the lake. East winds 5 to 10 mph. Chance of precipitation 40%.
Wednesday Night... Cloudy. A chance of showers in the evening. A slight chance of thunderstorms. Showers likely after midnight. Near steady temperature in the lower 40s. East winds around 5 mph. Chance of precipitation 70%.
Thursday... Showers with a slight chance of thunderstorms in the morning, then showers likely in the afternoon. Highs in the mid 50s. Chance of precipitation 80%.
Thursday Night... Mostly cloudy. A chance of showers, mainly in the evening. Lows in the lower 40s. Chance of precipitation 30%.
Friday... Showers likely. Highs in the mid 60s. Chance of precipitation 70%.
Friday Night... Showers likely in the evening, then showers with a chance of thunderstorms after midnight. Lows in the mid 50s. Chance of precipitation 80%.
Saturday... Mostly cloudy. Showers likely in the morning. Highs in the mid 60s. Temperature falling into the upper 50s in the afternoon. Chance of precipitation 60%.
Saturday Night... Mostly cloudy. Lows in the lower 40s.
Sunday... Partly cloudy. Highs around 60.
Sunday Night... Mostly clear. Lows in the mid 40s.
POP = Probability of Precipitation
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