10-Day Weather Forecast - Chapin, IL

Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning then partly sunny in the afternoon. Humid with highs in the lower 90s. Southwest winds around 5 mph. Chance of rain 40 percent. Heat index values up to 107.

Partly cloudy. Humid with lows in the mid 70s. Southwest winds around 5 mph.

Mostly sunny. Humid with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 109.

Mostly clear. Humid with lows in the mid 70s. West winds 5 to 10 mph.

Mostly clear. Highs in the upper 80s. Lows in the mid 60s.

Mostly clear. Highs in the upper 80s. Lows in the mid 60s.

Mostly clear. Highs in the upper 80s. Lows in the mid 60s.

Mostly clear. Highs in the upper 80s. Lows in the mid 60s.

Mostly clear. Highs in the upper 80s. Lows in the mid 60s.

Partly cloudy. Lows in the mid 60s. Highs in the upper 80s.

Partly cloudy. Lows in the mid 60s. Highs in the upper 80s.

Mostly clear in the evening then becoming partly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of rain 30 percent.

Mostly sunny. Highs in the upper 80s.

Clear with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 66F. Dew point will be around 67F with an average humidity of 81%. Winds will be 3 mph from the NE.

Sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 84F. Dew point will be around 66F with an average humidity of 69%. Winds will be 4 mph from the NE.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 66F. Dew point will be around 66F with an average humidity of 79%. Winds will be 4 mph from the E.

Sunny. High temperature around 87F. Dew point will be around 66F with an average humidity of 66%. Winds will be 5 mph from the SE.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 70F. Dew point will be around 67F with an average humidity of 73%. Winds will be 5 mph from the SE.