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Greenville, IL Weather Forecast
Greenville, IL Weather Forecast Date: 602 AM CDT Sun Sep 06 2026
The area/counties/county of: Montgomery County Il, including the cities of: Litchfield and Vandalia.or toggle through each period.
Today... Mostly cloudy this morning, then clearing. Not as warm with highs in the upper 80s. Northeast winds 5 to 10 mph.
Tonight... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Northeast winds 5 to 10 mph.
Labor Day... Sunny. Highs in the mid 80s. East winds 5 to 10 mph.
Monday Night... Mostly clear. Lows in the lower 60s. East winds around 5 mph.
Tuesday... Sunny. Highs in the lower 90s. South winds 5 to 10 mph.
Tuesday Night... Mostly clear. Not as cool with lows in the lower 70s.
Wednesday... Mostly sunny. Hot with highs in the upper 90s.
Wednesday Night... Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70%.
Thursday... Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Cooler with highs in the mid 80s. Chance of rain 50%.
Thursday Night... Mostly clear. A 20% chance of showers. Lows in the lower 60s. Highs in the mid 80s.
Friday... Mostly clear. A 20% chance of showers. Lows in the lower 60s. Highs in the mid 80s.
Friday Night... Mostly clear. A slight chance of showers and thunderstorms. Lows in the lower 60s. Highs in the upper 80s. Chance of rain 20%.
POP = Probability of Precipitation
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