10-Day Weather Forecast - Harristown, IL

Mostly sunny and brisk cooler with highs around 14. Northwest winds 15 to 25 mph with gusts up to 35 mph. Wind chill values as low as 18 below.

Partly cloudy. Near steady temperature around 8 above. West winds 5 to 10 mph. Wind chill values as low as 7 below.

Mostly sunny. Not as cool with highs in the upper 20s. Southwest winds 5 to 10 mph. Wind chill values as low as 3 below in the morning.

Mostly cloudy. Not as cool with lows in the lower 20s. Temperature rising to around 30 after midnight. South winds 15 to 20 mph.

Partly cloudy. Highs in the upper 30s. Lows 15 to 20.

Partly cloudy. Highs in the upper 30s. Lows 15 to 20.

Partly cloudy. Highs in the upper 20s. Lows 15 to 20.

Partly cloudy. Highs in the upper 20s. Lows 15 to 20.

Partly sunny in the morning then becoming mostly cloudy. Highs in the upper 20s.

Mostly cloudy with a 30 percent chance of snow. Lows around 10 above. Highs around 20. Wind chill values as low as 5 below.

Mostly cloudy with a 30 percent chance of snow. Lows around 10 above. Highs around 20. Wind chill values as low as 5 below.

Mostly cloudy with a 40 percent chance of snow. Cold with lows around zero. Wind chill values as low as 15 below.

Partly sunny. Highs 10 to 15. Wind chill values as low as 15 below in the morning.

Clear. Low temperature around 4F. Dew point will be around -1F with an average humidity of 69%. Winds will be 3 mph from the W.

Sunny. High temperature around 15F. Dew point will be around 1F with an average humidity of 64%. Winds will be 4 mph from the W.

Clear. Low temperature around 7F. Dew point will be around 2F with an average humidity of 73%. Winds will be 1 mph from the W.

Partly cloudy. High temperature around 18F. Dew point will be around 6F with an average humidity of 67%. Winds will be 3 mph from the W.

Cloudy. Low temperature around 11F. Dew point will be around 8F with an average humidity of 77%. Winds will be 3 mph from the W.