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Big Muddy Correctional Facility, IL Weather Forecast
Big Muddy Correctional Facility, IL Weather Forecast Date: 117 PM CDT Wed Sep 30 2026
The area/counties/county of: Jefferson, including the city of Mount Vernon.or toggle through each period.
This Afternoon... Mostly sunny. Near steady temperature in the upper 80s. South winds around 10 mph.
Tonight... Mostly cloudy. Not as cool with lows in the lower 70s. South winds 5 to 10 mph.
Thursday... Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 90s. Southwest winds 10 to 15 mph.
Thursday Night... Mostly cloudy. Showers after midnight. Lows in the upper 60s. Southwest winds 5 to 10 mph, becoming northwest after midnight. Chance of rain 90%.
Friday... Showers in the morning. Cooler with highs in the lower 70s. North winds 10 to 15 mph. Chance of rain 90%.
Friday Night... Partly cloudy. Cooler with lows in the lower 50s.
Saturday... Sunny. Highs in the lower 70s.
Saturday Night... Partly cloudy. Lows around 50. Highs in the mid 70s.
Sunday... Partly cloudy. Lows around 50. Highs in the mid 70s.
Sunday Night... Mostly clear. Lows around 50.
Monday... Clear. Highs in the lower 70s. Lows in the mid 40s.
Monday Night... Clear. Highs in the lower 70s. Lows in the mid 40s.
POP = Probability of Precipitation
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