Weather WorldJefferson County Fairground, IL 7-Day Night Weather Forecast
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Jefferson County Fairground, IL Weather Forecast
Jefferson County Fairground, IL Weather Forecast Date: 522 AM CDT Tue Oct 06 2026
The area/counties/county of: Jefferson, including the city of Mount Vernon.or toggle through each period.
Today... Sunny. Highs in the upper 70s. Southeast winds around 5 mph.
Tonight... Clear. Lows in the lower 50s. Calm winds, becoming southwest around 5 mph after midnight.
Wednesday... Sunny. Highs in the upper 80s. Southwest winds 5 to 10 mph.
Wednesday Night... Clear. Lows in the mid 50s. Southwest winds around 5 mph, becoming northwest around 5 mph after midnight.
Thursday... Sunny. Highs in the lower 80s. North winds 5 to 10 mph.
Thursday Night... Mostly clear. Lows in the lower 50s.
Friday... Sunny. Highs in the lower 80s.
Friday Night... Mostly clear. Lows in the lower 50s. Highs in the mid 80s.
Saturday... Mostly clear. Lows in the lower 50s. Highs in the mid 80s.
Saturday Night... Partly cloudy. Lows in the upper 50s. Highs in the upper 70s.
Sunday... Partly cloudy. Lows in the upper 50s. Highs in the upper 70s.
POP = Probability of Precipitation
Jefferson County Fairground Radar Loop
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