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Gillespie, IL Weather Forecast
Gillespie, IL Weather Forecast Date: 249 PM CST Tue Nov 03 2026
The area/counties/county of: Greene County Il, Jersey County Il.or toggle through each period.
Tonight... Rain with a slight chance of thunderstorms this evening, then a chance of rain after midnight. Cooler with lows in the lower 50s. South winds 15 to 20 mph with gusts up to 30 mph, becoming southwest around 10 mph with gusts up to 20 mph after midnight. Chance of rain near 100%.
Wednesday... Mostly cloudy. A chance of sprinkles in the morning. Cooler with highs in the lower 60s. Southwest winds 10 to 15 mph.
Wednesday Night... Mostly cloudy in the evening, then clearing. Cooler with lows in the lower 40s. Southwest winds 5 to 10 mph.
Thursday... Sunny. Highs in the lower 60s. West winds 5 to 10 mph with gusts up to 20 mph.
Thursday Night... Mostly cloudy. A slight chance of rain and thunderstorms after midnight. Lows in the lower 40s. Northwest winds around 5 mph. Chance of rain 20%.
Friday... Mostly cloudy. Highs in the upper 50s. Lows in the mid 30s.
Friday Night... Mostly cloudy. Highs in the upper 50s. Lows in the mid 30s.
Saturday... Partly cloudy. Highs in the mid 50s. Lows in the mid 30s.
Saturday Night... Partly cloudy. Highs in the mid 50s. Lows in the mid 30s.
Sunday... Mostly clear. Highs in the mid 60s. Lows in the mid 30s.
Monday... Mostly clear. Highs in the mid 60s. Lows in the mid 30s.
Monday Night... Mostly clear. Lows in the upper 30s. Highs in the upper 60s.
POP = Probability of Precipitation
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