Lake Carlinville, IL 7-Day Night Weather Forecast

Sunday... Mostly sunny. A chance of showers and thunderstorms in the morning. Humid with highs in the lower 90s. South winds 5 to 10 mph. Chance of rain 30%. Heat index values up to 104 in the afternoon.

Sunday Night... Partly cloudy. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 103 early in the evening.

Monday... Sunny. Highs in the lower 90s. Heat index values up to 105.

Monday Night... Partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Highs in the lower 90s. Chance of rain 20%. Heat index values up to 105.

Tuesday... Partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Highs in the lower 90s. Chance of rain 20%. Heat index values up to 105.

Tuesday Night... Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 70s. Chance of rain 60%. Heat index values up to 100 early in the evening.

Wednesday... Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows in the upper 60s. Chance of rain 50%.

Wednesday Night... Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows in the upper 60s. Chance of rain 50%.

Thursday... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the lower 80s. Lows in the mid 60s. Chance of rain 50%.

Thursday Night... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the lower 80s. Lows in the mid 60s. Chance of rain 50%.