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Jefferson, IL 7-Day Night Weather Forecast
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Jefferson, IL Weather Forecast
Jefferson, IL Weather Forecast Date: 251 PM CDT Sun Sep 20 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.
Late This Afternoon... Showers, breezy. Temperatures in the mid 60s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100%.
Tonight... Cloudy. Showers likely and areas of drizzle in the evening, then a chance of showers after midnight. Breezy. Lows in the upper 50s. Northeast winds 15 to 20 mph, diminishing to 10 to 15 mph after midnight. Gusts up to 30 mph. Chance of precipitation 60%.
Monday... Cloudy. A slight chance of showers until late afternoon. Highs in the mid 60s. Northeast winds 15 to 20 mph with gusts up to 25 mph. Chance of precipitation 20%.
Monday Night... Cloudy. Lows in the mid 50s. Northeast winds 10 to 15 mph.
Tuesday... Mostly cloudy. Highs in the mid 60s. Northeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.
Tuesday Night... Partly cloudy. Lows in the mid 50s. Northeast winds 10 to 15 mph.
Wednesday... Mostly cloudy. Highs in the mid 60s.
Wednesday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 50s.
Thursday... Partly cloudy in the morning, then becoming mostly cloudy. Highs in the mid 60s.
Thursday Night... Mostly cloudy. Lows in the mid 50s.
Friday... Mostly cloudy. Highs in the upper 60s.
Friday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 50s.
Saturday... Mostly cloudy. Highs in the lower 70s.
Saturday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 50s.
POP = Probability of Precipitation
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