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Ashley Reservoir, IL Weather Forecast
Ashley Reservoir, IL Weather Forecast Date: 128 PM CDT Tue Aug 04 2026
The area/counties/county of: Clinton County Il, including the cities of: Centralia and Salem.or toggle through each period.
This Afternoon... Sunny. Near steady temperature in the mid 80s. Southeast winds around 5 mph.
Tonight... Mostly clear. Lows in the mid 60s. Southeast winds around 5 mph.
Wednesday... Sunny. Highs in the upper 80s. South winds 5 to 10 mph.
Wednesday Night... Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows around 70. South winds around 5 mph. Chance of rain 50%.
Thursday... Showers and thunderstorms likely, mainly in the morning. Humid with highs in the mid 80s. Southwest winds around 5 mph. Chance of rain 70%.
Thursday Night... Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Highs in the mid 80s. Chance of rain 50%.
Friday... Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Highs in the mid 80s. Chance of rain 50%.
Friday Night... Mostly cloudy in the evening, then becoming partly cloudy. A chance of thunderstorms. A chance of showers. Lows in the upper 60s. Chance of rain 50%.
Saturday... Mostly sunny. Highs in the upper 80s. Heat index values up to 100 in the afternoon.
Saturday Night... Mostly clear. Lows in the lower 70s.
Sunday... Mostly sunny. Highs around 90. Heat index values up to 105 in the afternoon.
Sunday Night... Mostly clear. Lows in the mid 70s. Highs in the lower 90s. Heat index values up to 110.
POP = Probability of Precipitation
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