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Eldorado Reservoir, IL Weather Forecast
Eldorado Reservoir, IL Weather Forecast Date: 417 PM CDT Tue Aug 04 2026
The area/counties/county of: Saline, including the city of Harrisburg.or toggle through each period.
Tonight... Mostly clear. Lows in the lower 60s. Southeast winds around 5 mph this evening, becoming light and variable.
Wednesday... Sunny. Highs around 90. Calm winds, becoming south around 5 mph in the afternoon.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 60s. Southeast winds around 5 mph in the evening, becoming light and variable.
Thursday... Partly sunny. Highs in the upper 80s. Southwest winds around 5 mph.
Thursday Night... Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the lower 70s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 40%.
Friday... Becoming partly sunny in the afternoon. A chance of thunderstorms. Showers likely, mainly in the morning. Highs in the upper 80s. Chance of rain 60%.
Friday Night... Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of rain 50%.
Saturday... Mostly sunny. Highs in the upper 80s.
Saturday Night... Mostly clear. Lows in the lower 70s. Highs in the lower 90s.
Sunday... Mostly clear. Lows in the lower 70s. Highs in the lower 90s.
Monday... Mostly clear. Lows in the lower 70s. Highs in the lower 90s.
POP = Probability of Precipitation
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