10-Day Weather Forecast - Petersburg, IL

Sunny. Highs around 80. Southeast winds around 5 mph becoming southwest in the afternoon.

Mostly clear. Not as cool with lows in the lower 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph.

Mostly sunny in the morning then becoming mostly cloudy. Highs in the upper 70s. Southwest winds 10 to 15 mph becoming northwest 15 to 20 mph with gusts up to 30 mph in the afternoon.

Mostly cloudy in the evening then clearing. Much cooler with lows in the mid 30s. North winds 15 to 20 mph with gusts up to 30 mph.

Sunny. Much cooler with highs in the mid 50s.

Mostly cloudy. Lows in the upper 30s. Highs in the lower 60s.

Mostly cloudy. Lows in the upper 30s. Highs in the lower 60s.

Mostly cloudy. Lows in the upper 30s. Highs in the lower 60s.

Mostly cloudy. Lows in the upper 30s. Highs in the lower 60s.

Mostly cloudy. Lows in the upper 40s.

Mostly sunny. Not as cool with highs in the mid 70s.

Mostly cloudy. A chance of rain in the evening. Cooler with lows in the mid 30s. Chance of rain 40 percent.

Partly sunny. Much cooler with highs around 50.

Cloudy. Low temperature around 32F. Dew point will be around 23F with an average humidity of 57%. Winds will be 7 mph from the NE.

Cloudy. High temperature around 48F. Dew point will be around 24F with an average humidity of 48%. Winds will be 5 mph from the E.

Cloudy. Low temperature around 36F. Dew point will be around 28F with an average humidity of 60%. Winds will be 4 mph from the E.

Cloudy. High temperature around 54F. Dew point will be around 33F with an average humidity of 58%. Winds will be 4 mph from the SE.

Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 43F. Dew point will be around 38F with an average humidity of 70%. Winds will be 4 mph from the E.