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Boyd, IL Weather Forecast
Boyd, IL Weather Forecast Date: 1022 PM CDT Wed Oct 21 2026
The area/counties/county of: Jefferson, including the city of Mount Vernon.or toggle through each period.
Tonight... Clear. Patchy fog after midnight. Lows in the mid 40s. Calm winds.
Thursday... Patchy fog in the morning. Sunny. Highs in the mid 70s. Calm winds, becoming northeast around 5 mph in the afternoon.
Thursday Night... Clear. Lows in the mid 40s. Calm winds.
Friday... Sunny. Highs in the mid 70s. East winds around 5 mph.
Friday Night... Mostly clear. Lows in the mid 40s. East winds around 5 mph.
Saturday... Partly cloudy. Highs in the mid 70s. Lows in the mid 40s.
Saturday Night... Partly cloudy. Highs in the mid 70s. Lows in the mid 40s.
Sunday... Mostly cloudy. Highs in the mid 70s. Lows in the upper 40s.
Monday... Mostly cloudy. Highs in the mid 70s. Lows in the upper 40s.
Tuesday... Mostly cloudy. Highs in the mid 70s. Lows in the upper 40s.
POP = Probability of Precipitation
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