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Opdyke, IL Weather Forecast
Opdyke, IL Weather Forecast Date: 627 PM CDT Wed Sep 30 2026
The area/counties/county of: Jefferson, including the city of Mount Vernon.or toggle through each period.
Tonight... Partly cloudy this evening, then becoming 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. Less humid with lows in the lower 50s. Northeast winds 10 to 15 mph.
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.
Tuesday... Mostly clear. Highs in the lower 70s. Lows in the upper 40s.
Tuesday Night... Mostly clear. Highs in the lower 70s. Lows in the upper 40s.
POP = Probability of Precipitation
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