10-Day Weather Forecast - Herrin, IL

Sunny. A slight chance of showers in the afternoon. Hot with highs in the upper 90s. Southwest winds around 5 mph. Chance of rain 20 percent. Highest heat index readings heat index readings up to 106 in the afternoon.

Mostly clear. Lows in the mid 70s. South winds around 5 mph in the evening, becoming light and variable.

Sunny, hot with highs in the upper 90s. Northwest winds around 5 mph.

Mostly clear. Lows in the lower 70s. Northwest winds around 5 mph in the evening, becoming light and variable.

Mostly clear. Highs in the mid 90s.

Mostly clear. Lows in the upper 60s.

Mostly clear. Highs in the mid 90s.

Mostly clear. Lows in the upper 60s.

Mostly clear. Highs in the mid 90s.

Mostly clear. Hot. Lows in the mid 70s.

Mostly clear. Hot. Highs in the upper 90s.

Mostly clear. Hot. Lows in the mid 70s.

Mostly clear. Hot. Highs in the upper 90s.

Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 75F. Dew point will be around 69F with an average humidity of 74%. Winds will be 4 mph from the SW.

Sunny. High temperature around 91F. Dew point will be around 69F with an average humidity of 59%. Winds will be 5 mph from the SW.

Clear. Low temperature around 71F. Dew point will be around 68F with an average humidity of 78%. Winds will be 2 mph from the SE.

Sunny. High temperature around 88F. Dew point will be around 68F with an average humidity of 64%. Winds will be 4 mph from the S.

Clear. Low temperature around 69F. Dew point will be around 67F with an average humidity of 77%. Winds will be 3 mph from the SE.