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Big Forked Lake, IL Weather Forecast
Big Forked Lake, IL Weather Forecast Date: 913 PM CDT Wed Sep 30 2026
The area/counties/county of: Clinton County Il, including the cities of: Centralia and Salem.or toggle through each period.
Tonight... Mostly cloudy. Lows in the lower 70s. South winds 5 to 10 mph.
Thursday... Partly sunny in the morning, then becoming mostly cloudy. Highs around 90. Southwest winds 10 to 15 mph.
Thursday Night... Cloudy with a slight chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Lows in the mid 60s. West winds 5 to 10 mph, becoming north after midnight. Chance of rain 90%.
Friday... Showers in the morning, then partly sunny in the afternoon. Much cooler with highs in the lower 70s. North winds 10 to 15 mph. Chance of rain 80%.
Friday Night... Partly cloudy in the evening, then becoming mostly clear. Much cooler. Less humid with lows in the lower 50s. Northeast winds 5 to 10 mph.
Saturday... Sunny. Highs in the lower 70s.
Saturday Night... Partly cloudy. Lows around 50.
Sunday... Mostly clear. Highs in the mid 70s. Lows in the lower 50s.
Sunday Night... Mostly clear. Highs in the mid 70s. Lows in the lower 50s.
Monday... Clear. Highs around 70. Lows in the mid 40s.
Monday Night... Clear. Highs around 70. Lows in the mid 40s.
Tuesday... Mostly clear. Highs around 70. Lows in the upper 40s.
Tuesday Night... Mostly clear. Highs around 70. Lows in the upper 40s.
POP = Probability of Precipitation
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