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Mason, IL Weather Forecast
Mason, IL Weather Forecast Date: 622 PM CDT Fri Oct 30 2026
The area/counties/county of: Effingham, including the city of Effingham.or toggle through each period.
Tonight... Mostly cloudy. Lows in the mid 50s. East winds around 5 mph.
Saturday... Cloudy. Highs in the lower 70s. East winds around 5 mph.
Saturday Night... Cloudy. Lows in the mid 50s. East winds around 5 mph.
Sunday... Showers likely, mainly in the morning. Highs in the mid 60s. Southeast winds 5 to 10 mph. Chance of rain 70%.
Sunday Night... Cloudy. Lows in the lower 50s. Southeast winds around 5 mph.
Monday... Mostly cloudy with a 40% chance of showers. Highs in the mid 60s. Lows in the upper 50s.
Monday Night... Mostly cloudy with a 40% chance of showers. Highs in the mid 60s. Lows in the upper 50s.
Tuesday... Showers likely. Highs in the lower 70s. Lows in the mid 50s. Chance of rain 70%.
Tuesday Night... Showers likely. Highs in the lower 70s. Lows in the mid 50s. Chance of rain 70%.
Wednesday... Showers likely. Highs in the upper 60s. Chance of rain 60%.
Wednesday Night... Mostly cloudy with a 30% chance of showers. Lows around 50. Highs in the mid 60s.
Thursday... Mostly cloudy with a 30% chance of showers. Lows around 50. Highs in the mid 60s.
Thursday Night... Mostly cloudy. Lows in the mid 40s.
POP = Probability of Precipitation
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