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Herrin Reservoir Number 2, IL 7-Day Night Weather Forecast
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Herrin Reservoir Number 2, IL Weather Forecast
Herrin Reservoir Number 2, IL Weather Forecast Date: 438 PM CDT Tue Aug 11 2026
The area/counties/county of: Williamson, including the city of Herrin.or toggle through each period.
Tonight... Mostly clear this evening, then becoming partly cloudy. Lows in the mid 70s. Southwest winds 5 to 10 mph.
Wednesday... Mostly sunny. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph.
Wednesday Night... Partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph.
Thursday... Mostly sunny. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph.
Thursday Night... Partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph.
Friday... Mostly sunny. Hot with highs in the upper 90s.
Friday Night... Mostly clear. Hot. Lows in the mid 70s. Highs around 100.
Saturday... Mostly clear. Hot. Lows in the mid 70s. Highs around 100.
Sunday... Mostly clear. Hot. Lows in the mid 70s. Highs around 100.
Monday... Partly cloudy. Highs in the lower 90s. Lows around 70.
POP = Probability of Precipitation
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