10-Day Weather Forecast - Petersburg, IL

Mostly sunny. Not as cool with highs in the lower 30s. South winds 5 to 10 mph.

Mostly cloudy. Not as cool with lows in the mid 20s. Temperature rising into the lower 30s after midnight. South winds 10 to 15 mph with gusts up to 30 mph.

Mostly sunny. Highs in the upper 30s. West winds 10 to 15 mph with gusts up to 25 mph.

Partly cloudy. Lows around 20. Highs around 30.

Partly cloudy. Lows around 20. Highs around 30.

Mostly cloudy. Lows around 10 above. Highs 15 to 20. Wind chill values as low as 5 below.

Mostly cloudy. Lows around 10 above. Highs 15 to 20. Wind chill values as low as 5 below.

Mostly cloudy. Lows around 5 below. Highs around 10 above. Wind chill values as low as 20 below.

Mostly cloudy. Lows around 5 below. Highs around 10 above. Wind chill values as low as 20 below.

Mostly cloudy. A chance of snow in the evening. Cold with lows around zero. Chance of snow 30 percent. Wind chill values as low as 10 below.

Mostly sunny. Not as cool with highs in the lower 20s. Wind chill values as low as 10 below in the morning.

Clear. Low temperature around 7F. Dew point will be around -1F with an average humidity of 57%. Winds will be 4 mph from the SW.

Sunny. High temperature around 24F. Dew point will be around 2F with an average humidity of 53%. Winds will be 5 mph from the SW.

Mostly clear. Low temperature around 13F. Dew point will be around 6F with an average humidity of 64%. Winds will be 3 mph from the SW.

Partly cloudy. High temperature around 24F. Dew point will be around 9F with an average humidity of 60%. Winds will be 1 mph from the SW.

Mostly cloudy. Low temperature around 13F. Dew point will be around 8F with an average humidity of 65%. Winds will be 3 mph from the NW.

Partly cloudy. High temperature around 23F. Dew point will be around 8F with an average humidity of 60%. Winds will be 5 mph from the NW.

Clear. Low temperature around 12F. Dew point will be around 6F with an average humidity of 65%. Winds will be 4 mph from the W.