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Germantown, IL Weather Forecast
Germantown, IL Weather Forecast Date: 127 AM CDT Mon Oct 12 2026
The area/counties/county of: Clinton County Il, including the cities of: Centralia and Salem.or toggle through each period.
Rest of Tonight... Partly cloudy. Lows in the upper 50s. Southwest winds around 5 mph.
Monday... Sunny. Highs in the lower 90s. Southwest winds 10 to 15 mph.
Monday Night... Mostly clear. Lows in the upper 60s. Southwest winds 5 to 10 mph with gusts up to 20 mph.
Tuesday... Sunny. Highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 101 in the afternoon.
Tuesday Night... Mostly clear in the evening, then partly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 40%.
Wednesday... A slight chance of thunderstorms. Showers, cooler with highs in the mid 80s. Chance of rain 90%.
Wednesday Night... Showers likely with a chance of thunderstorms. Lows in the mid 60s. Highs in the lower 80s. Chance of rain 70%.
Thursday... Showers likely with a chance of thunderstorms. Lows in the mid 60s. Highs in the lower 80s. Chance of rain 70%.
Thursday Night... Mostly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the evening. Cooler with lows in the lower 50s. Chance of rain 40%.
Friday... Mostly sunny and breezy. Much cooler with highs in the mid 60s.
Friday Night... Mostly clear. Lows in the upper 30s. Highs in the lower 60s.
Saturday... Mostly clear. Lows in the upper 30s. Highs in the lower 60s.
Saturday Night... Clear. Lows in the mid 30s.
POP = Probability of Precipitation
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