10-Day Weather Forecast - Port Byron, IL

Partly sunny with a slight chance of snow in the morning then sunny in the afternoon. Highs in the mid 20s. Temperature falling to around 16 in the afternoon. North winds 10 to 15 mph. Gusts up to 30 mph in the morning. Chance of snow 20 percent.

Partly cloudy in the evening then becoming mostly cloudy. Much colder with lows around 3 above. North winds 5 to 10 mph. Wind chill values as low as 6 below in the evening.

Partly sunny. Highs in the mid 20s. Southeast winds 5 to 10 mph.

Mostly cloudy. Not as cool with lows around 18. Temperature rising into the upper 20s after midnight. South winds 10 to 15 mph with gusts up to 25 mph.

Partly sunny in the morning then becoming mostly cloudy. Not as cool with highs around 40.

Mostly cloudy with a chance of rain. Lows in the upper 20s. Chance of rain 50 percent.

Mostly cloudy. Near steady temperature around 30.

Mostly cloudy with a 30 percent chance of snow. Lows 15 to 20. Highs in the mid 20s.

Mostly cloudy with a 30 percent chance of snow. Lows 15 to 20. Highs in the mid 20s.

Mostly cloudy. Lows 5 to 10 above. Highs 10 to 15. Wind chill values as low as 5 below.

Mostly cloudy. Lows 5 to 10 above. Highs 10 to 15. Wind chill values as low as 5 below.

Mostly cloudy. Colder with lows 5 below to zero. Wind chill values as low as 20 below.

Mostly sunny. Cold with highs around 10 above. Wind chill values as low as 20 below.

Partly cloudy. Low temperature around 8F. Dew point will be around 2F with an average humidity of 74%. Winds will be 5 mph from the NW.

Partly cloudy. High temperature around 17F. Dew point will be around 6F with an average humidity of 66%. Winds will be 4 mph from the SW.

Mostly clear. Low temperature around 13F. Dew point will be around 6F with an average humidity of 71%. Winds will be 4 mph from the W.

Mostly sunny. High temperature around 18F. Dew point will be around 7F with an average humidity of 66%. Winds will be 3 mph from the W.

Clear. Low temperature around 13F. Dew point will be around 7F with an average humidity of 71%. Winds will be 3 mph from the W.