Steppig Lake, IL 7-Day Night Weather Forecast

Tuesday... Sunny. A slight chance of showers and thunderstorms in the afternoon. Warmer with highs in the upper 90s. South winds 5 to 10 mph. Chance of rain 20%. Heat index values up to 107.

Tuesday Night... Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows around 70. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 20%. Heat index values up to 102 early in the evening.

Wednesday... Sunny, hot with highs in the mid 90s. Heat index values up to 105.

Wednesday Night... Partly cloudy in the evening, then clearing. Lows in the lower 70s. Heat index values up to 100 early in the evening.

Thursday... Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20%. Heat index values up to 105.

Thursday Night... Partly cloudy. Lows in the upper 60s. Heat index values up to 100 early in the evening.

Friday... Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20%. Heat index values up to 100 in the afternoon.

Friday Night... Partly cloudy in the evening, then clearing. Lows in the upper 60s.

Saturday... Mostly sunny with a 20% chance of showers. Highs in the upper 80s.

Saturday Night... A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 60s. Chance of rain 30%.