10-Day Weather Forecast - Piasa, IL

Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 104.

Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent. Heat index values up to 103 early in the evening.

Sunny, hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 105.

Mostly clear. Lows around 70. Northeast winds around 5 mph. Heat index values up to 100 early in the evening.

Mostly clear. Highs in the lower 90s.

Mostly clear. Lows in the mid 60s.

Mostly clear. Highs in the lower 90s.

Mostly clear. Lows in the mid 60s.

Mostly clear. Hot. Highs in the upper 90s. Heat index values up to 105.

Mostly clear. Hot. Lows in the mid 70s. Heat index values up to 105.

Mostly clear. Hot. Highs in the upper 90s. Heat index values up to 105.

Partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.

Partly cloudy. A slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent.

Clear. Low temperature around 74F. Dew point will be around 67F with an average humidity of 67%. Winds will be 3 mph from the S.

Mostly sunny. High temperature around 92F. Dew point will be around 67F with an average humidity of 54%. Winds will be 2 mph from the SW.

Clear. Low temperature around 69F. Dew point will be around 67F with an average humidity of 75%. Winds will be 3 mph from the SE.

Sunny. High temperature around 92F. Dew point will be around 67F with an average humidity of 57%. Winds will be 5 mph from the S.

Clear. Low temperature around 69F. Dew point will be around 66F with an average humidity of 73%. Winds will be 4 mph from the SE.