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Johnson Lake, IL Weather Forecast
Johnson Lake, IL Weather Forecast Date: 852 AM CDT Sun Oct 11 2026
The area/counties/county of: Henry County Il, including the city of Geneseo.or toggle through each period.
Rest of Today... Sunny. Highs in the mid 80s. South winds 5 to 10 mph.
Tonight... Mostly clear in the evening, then becoming mostly cloudy. Much warmer with lows in the mid 60s. South winds 5 to 10 mph.
Columbus Day... Sunny. Highs in the upper 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph.
Monday Night... Clear. Lows around 70. Southwest winds 10 to 15 mph with gusts up to 25 mph.
Tuesday... Sunny. Highs in the lower 80s. West winds 10 to 15 mph.
Tuesday Night... Mostly clear in the evening, then becoming partly cloudy. Showers likely after midnight. Lows in the lower 60s. Chance of rain 60%.
Wednesday... Mostly cloudy with a 50% chance of showers. Highs in the lower 70s. Lows in the mid 50s.
Wednesday Night... Mostly cloudy with a 50% chance of showers. Highs in the lower 70s. Lows in the mid 50s.
Thursday... Showers likely. Highs in the upper 60s. Chance of rain 70%.
Thursday Night... Mostly cloudy with a 40% chance of showers. Lows around 50.
Friday... Mostly cloudy and breezy. Highs in the lower 60s. Lows in the upper 30s.
Friday Night... Mostly cloudy and breezy. Highs in the lower 60s. Lows in the upper 30s.
POP = Probability of Precipitation
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