10-Day Weather Forecast - Harristown, IL

Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Humid with highs around 90. Southwest winds around 10 mph with gusts up to 25 mph. Chance of rain 30 percent. Heat index values up to 102.

Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. South winds 5 to 10 mph. Chance of rain 40 percent.

Mostly sunny. A chance of showers and thunderstorms in the morning. Humid with highs in the lower 90s. Southwest winds 10 to 15 mph. Chance of rain 40 percent. Heat index values up to 104 in the afternoon.

Partly cloudy. A chance of showers after midnight. Humid with lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.

Mostly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent.

Showers likely. A chance of thunderstorms after midnight. Lows around 70. Chance of rain 60 percent.

Showers likely with a chance of thunderstorms. Highs in the lower 80s. Chance of rain 70 percent.

Showers likely with a chance of thunderstorms. Lows in the upper 60s. Chance of rain 70 percent.

A chance of showers in the morning. Mostly cloudy. Highs in the lower 80s. Chance of rain 40 percent.

Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 40 percent.

A chance of showers in the morning. Partly sunny. Highs in the mid 80s. Chance of rain 40 percent.

Partly cloudy. Lows in the upper 60s.

Partly cloudy. Highs in the mid 80s.

Mostly clear with a 35% chance for rain and thunderstorms. Low temperature around 70F. Dew point will be around 71F with an average humidity of 89%. Winds will be 3 mph from the SE.

Mostly sunny with a 30% chance for rain and thunderstorms. High temperature around 83F. Dew point will be around 70F with an average humidity of 77%. Winds will be 3 mph from the S.

Mostly clear with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 68F. Dew point will be around 70F with an average humidity of 91%. Winds will be 4 mph from the E.

Mostly sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 84F. Dew point will be around 69F with an average humidity of 75%. Winds will be 3 mph from the S.

Clear with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 67F. Dew point will be around 69F with an average humidity of 89%. Winds will be 4 mph from the E.