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Boyd, IL 7-Day Night Weather Forecast
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Boyd, IL Weather Forecast
Boyd, IL Weather Forecast Date: 127 AM CDT Sat Sep 05 2026
The area/counties/county of: Jefferson, including the city of Mount Vernon.or toggle through each period.
Overnight... Mostly clear. Near steady temperature in the mid 70s. Calm winds.
Saturday... Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs around 101. West winds around 5 mph. Chance of rain 20%. Highest heat index readings heat index readings up to 106 in the afternoon.
Saturday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 70s. North winds around 5 mph.
Sunday... Sunny. Highs in the lower 90s. Northeast winds 5 to 10 mph.
Sunday Night... Partly cloudy in the evening, then clearing. Lows in the lower 60s. Northeast winds 5 to 10 mph.
Labor Day... Mostly clear. Highs in the lower 90s. Lows in the mid 60s.
Monday Night... Mostly clear. Highs in the lower 90s. Lows in the mid 60s.
Tuesday... Mostly clear. Hot. Highs in the upper 90s. Lows in the lower 70s.
Wednesday... Mostly clear. Hot. Highs in the upper 90s. Lows in the lower 70s.
Wednesday Night... Mostly clear. A chance of showers after midnight. Lows around 70. Chance of rain 30%.
Thursday... Mostly sunny with a chance of showers. Highs in the lower 90s. Chance of rain 50%.
Thursday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s.
POP = Probability of Precipitation
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