Weather WorldSummerville, IL 7-Day Night Weather Forecast
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Summerville, IL Weather Forecast
Summerville, IL Weather Forecast Date: 537 PM CDT Sun Sep 27 2026
The area/counties/county of: Greene County Il, Jersey County Il.or toggle through each period.
Tonight... Mostly cloudy. Lows in the lower 50s. North winds around 5 mph.
Monday... Sunny. Highs in the upper 70s. Northeast winds around 5 mph.
Monday Night... Mostly clear. Lows in the lower 50s. Light and variable winds.
Tuesday... Sunny. Highs in the lower 80s. Southeast winds 5 to 10 mph.
Tuesday Night... Partly cloudy in the evening, then becoming mostly cloudy. Not as cool with lows in the mid 60s. Southeast winds around 5 mph.
Wednesday... Partly sunny. Highs in the mid 80s.
Wednesday Night... Mostly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of rain 40%.
Thursday... Showers likely with a slight chance of thunderstorms. Highs in the lower 80s. Chance of rain 70%.
Thursday Night... Showers likely. A slight chance of thunderstorms after midnight. Lows around 60. Chance of rain 70%.
Friday... Mostly cloudy with a chance of showers in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Cooler with highs in the upper 60s. Chance of rain 50%.
Friday Night... Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the upper 60s. Chance of rain 20%.
Saturday... Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the upper 60s. Chance of rain 20%.
POP = Probability of Precipitation
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