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Mermet, IL 7-Day Night Weather Forecast
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Mermet, IL Weather Forecast
Mermet, IL Weather Forecast Date: 857 PM CDT Thu Oct 01 2026
The area/counties/county of: Johnson, including the city of Vienna.or toggle through each period.
Tonight... Mostly cloudy. Showers likely with a chance of thunderstorms after midnight. Lows in the upper 60s. Southwest winds around 5 mph. Chance of rain 70%.
Friday... Showers. A chance of thunderstorms, mainly in the morning. Much cooler. Near steady temperature in the upper 60s. North winds 5 to 10 mph. Chance of rain 90%.
Friday Night... Mostly cloudy. Less humid with lows in the mid 50s. Northeast winds 5 to 10 mph.
Saturday... Partly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph.
Saturday Night... Mostly cloudy. Lows in the mid 50s. Northeast winds around 5 mph in the evening, becoming light and variable.
Sunday... Mostly sunny. Highs in the mid 70s.
Sunday Night... Mostly clear. Lows in the lower 50s.
Monday... Clear. Highs in the lower 70s. Lows in the mid 40s.
Tuesday... Clear. Highs in the lower 70s. Lows in the mid 40s.
Tuesday Night... Mostly clear. Lows in the mid 40s. Highs in the mid 70s.
Wednesday... Mostly clear. Lows in the mid 40s. Highs in the mid 70s.
Wednesday Night... Mostly clear. Lows in the lower 50s.
POP = Probability of Precipitation
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