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Posey, IL Weather Forecast
Posey, IL Weather Forecast Date: 129 PM CDT Sun Oct 25 2026
The area/counties/county of: Clinton County Il, including the cities of: Centralia and Salem.or toggle through each period.
This Afternoon... Mostly sunny. Near steady temperature in the mid 70s. South winds around 5 mph.
Tonight... Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50. Light and variable winds.
Monday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 70s. Southwest winds around 5 mph.
Monday Night... Partly cloudy. Lows in the upper 40s. Light and variable winds.
Tuesday... Partly sunny. Highs in the mid 70s. South winds around 5 mph.
Tuesday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows around 50.
Wednesday... Sunny. Highs in the upper 70s.
Wednesday Night... Clear. Lows in the lower 50s.
Thursday... Sunny. Highs in the lower 80s.
Thursday Night... Partly cloudy. Lows in the mid 50s. Highs in the lower 80s.
Friday... Partly cloudy. Lows in the mid 50s. Highs in the lower 80s.
Friday Night... Mostly cloudy. A slight chance of showers after midnight. Lows in the upper 50s. Chance of rain 20%.
POP = Probability of Precipitation
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