10-Day Weather Forecast - Port Byron, IL

Cloudy. Areas of drizzle in the afternoon. Highs in the mid 40s. Southeast winds 5 to 10 mph.

Cloudy. Areas of fog. Lows in the upper 30s. West winds around 5 mph becoming north around 5 mph after midnight.

Patchy fog in the morning. Cloudy. Highs in the mid 40s. East winds 5 to 10 mph.

Cloudy with a 50 percent chance of rain. Near steady temperature in the lower 40s. Southeast winds 5 to 10 mph.

Mostly cloudy. Highs in the mid 50s. Lows around 40.

Mostly cloudy. Highs in the mid 50s. Lows around 40.

Mostly cloudy. Highs in the mid 50s. Lows around 40.

Mostly cloudy. Much cooler with lows in the mid 20s.

Partly sunny in the morning then clearing. Much cooler with highs in the lower 30s. Temperature falling into the mid 20s in the afternoon.

Mostly clear. Lows around 10 above. Highs in the lower 20s. Wind chill values as low as 5 below.

Mostly clear. Lows around 10 above. Highs in the lower 20s. Wind chill values as low as 5 below.

Mostly clear. Lows around 10 above. Highs in the lower 20s. Wind chill values as low as 5 below.

Mostly sunny. Highs in the lower 30s.

Clear. Low temperature around 27F. Dew point will be around 12F with an average humidity of 52%. Winds will be 8 mph from the SW.

Mostly sunny. High temperature around 37F. Dew point will be around 19F with an average humidity of 54%. Winds will be 9 mph from the SW.

Mostly clear. Low temperature around 30F. Dew point will be around 22F with an average humidity of 67%. Winds will be 5 mph from the W.

Mostly sunny. High temperature around 39F. Dew point will be around 23F with an average humidity of 59%. Winds will be 5 mph from the SW.

Partly cloudy. Low temperature around 35F. Dew point will be around 27F with an average humidity of 72%. Winds will be 5 mph from the S.