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Greenfield, IL Weather Forecast
Greenfield, IL Weather Forecast Date: 1023 PM CDT Tue Sep 15 2026
The area/counties/county of: Greene County Il, Jersey County Il.or toggle through each period.
Overnight... Mostly cloudy with a chance of thunderstorms. A chance of showers late this evening, then showers likely. Lows around 70. Northeast winds around 5 mph. Chance of rain 70%.
Wednesday... Mostly cloudy in the morning, then becoming mostly sunny. A slight chance of thunderstorms. Showers likely, mainly in the morning. Humid with highs in the lower 90s. East winds around 5 mph, becoming southeast in the afternoon. Chance of rain 70%. Heat index values up to 102.
Wednesday Night... Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 70s. Southeast winds around 5 mph. Chance of rain 20%. Heat index values up to 100 early in the evening.
Thursday... Sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 90s. West winds around 5 mph. Chance of rain 20%. Heat index values up to 102.
Thursday Night... Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows around 70. Northeast winds around 5 mph. Chance of rain 20%.
Friday... Mostly clear. Highs in the lower 90s. Lows in the lower 70s.
Friday Night... Mostly clear. Highs in the lower 90s. Lows in the lower 70s.
Saturday... Mostly sunny. Highs in the mid 90s.
Saturday Night... Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 50%.
Sunday... Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50%.
Sunday Night... A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the mid 60s. Chance of rain 40%.
Monday... Mostly cloudy with a 20% chance of showers. Highs around 80. Lows around 60.
Monday Night... Mostly cloudy with a 20% chance of showers. Highs around 80. Lows around 60.
POP = Probability of Precipitation
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