Weather WorldBoulder Lake, IL 7-Day Night Weather Forecast
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Boulder Lake, IL Weather Forecast
Boulder Lake, IL Weather Forecast Date: 1202 PM CDT Sun Sep 27 2026
The area/counties/county of: Perry County Il, including the city of Pinckneyville.or toggle through each period.
This Afternoon... Mostly cloudy with a chance of sprinkles. Near steady temperature in the mid 70s. North winds around 5 mph.
Tonight... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s. North winds around 5 mph in the evening, becoming light and variable.
Monday... Sunny. Highs in the upper 70s. Calm winds, becoming northeast around 5 mph in the afternoon.
Monday Night... Clear. Lows in the lower 50s. Calm winds.
Tuesday... Sunny. Highs in the lower 80s. Southeast winds around 5 mph.
Tuesday Night... Partly cloudy. Lows in the lower 60s. Highs in the upper 80s.
Wednesday... Partly cloudy. Lows in the lower 60s. Highs in the upper 80s.
Wednesday Night... Mostly cloudy. Lows in the upper 60s.
Thursday... Mostly cloudy with a 50% chance of showers. Highs in the mid 80s. Lows in the lower 60s.
Thursday Night... Mostly cloudy with a 50% chance of showers. Highs in the mid 80s. Lows in the lower 60s.
Friday... Mostly cloudy. A chance of showers. Highs in the lower 70s. Chance of rain 50%.
Friday Night... Mostly cloudy. A chance of showers after midnight. Lows in the upper 50s. Chance of rain 40%.
POP = Probability of Precipitation
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