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Rio, IL Weather Forecast
Rio, IL Weather Forecast Date: 437 PM CDT Mon Oct 19 2026
The area/counties/county of: Knox, including the city of Galesburg.or toggle through each period.
Tonight... Mostly cloudy this evening, then becoming partly cloudy. Lows in the lower 40s. East winds around 5 mph this evening, becoming light and variable.
Tuesday... Sunny. Highs around 70. Southeast winds around 5 mph.
Tuesday Night... Clear. Lows in the mid 40s. Southeast winds around 5 mph.
Wednesday... Sunny. Highs in the lower 70s. Light and variable winds, becoming south around 5 mph in the afternoon.
Wednesday Night... Mostly clear. Lows in the upper 40s. Light and variable winds.
Thursday... Sunny. Highs in the lower 70s.
Thursday Night... Clear. Lows in the upper 40s.
Friday... Mostly clear. Highs in the lower 70s. Lows in the upper 40s.
Friday Night... Mostly clear. Highs in the lower 70s. Lows in the upper 40s.
Saturday... Mostly sunny. Highs in the lower 70s.
Saturday Night... Mostly cloudy. Lows in the lower 50s. Highs in the lower 70s.
Sunday... Mostly cloudy. Lows in the lower 50s. Highs in the lower 70s.
Sunday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50.
POP = Probability of Precipitation
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