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Merriam, IL 7-Day Night Weather Forecast
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Merriam, IL Weather Forecast
Merriam, IL Weather Forecast Date: 147 PM CDT Fri Sep 11 2026
The area/counties/county of: Wayne County Il, including the city of Fairfield.or toggle through each period.
This Afternoon... Partly sunny with a slight chance of showers and thunderstorms. Near steady temperature in the mid 80s. Southeast winds around 5 mph. Chance of rain 20%.
Tonight... Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Southeast winds around 5 mph. Chance of rain 50%.
Saturday... Mostly sunny. Highs in the upper 80s. Southwest winds around 5 mph.
Saturday Night... Mostly clear. Lows in the mid 60s. Calm winds.
Sunday... Mostly sunny. Highs in the lower 90s. Calm winds, becoming west around 5 mph in the afternoon.
Sunday Night... Partly cloudy. Lows in the lower 60s. Highs in the upper 80s.
Monday... Partly cloudy. Lows in the lower 60s. Highs in the upper 80s.
Monday Night... Mostly clear. Hot. Lows in the upper 60s. Highs in the mid 90s.
Tuesday... Mostly clear. Hot. Lows in the upper 60s. Highs in the mid 90s.
Wednesday... Mostly clear. Hot. Lows in the upper 60s. Highs in the mid 90s.
Wednesday Night... Partly cloudy. A chance of showers after midnight. Lows around 70. Chance of rain 30%.
POP = Probability of Precipitation
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