10-Day Weather Forecast - Petersburg, IL

Sunny. Highs in the upper 50s. Northwest winds 5 to 10 mph.

Partly cloudy. Lows in the upper 30s. Northeast winds around 5 mph.

Mostly sunny. Highs in the upper 50s. North winds 5 to 10 mph.

Mostly clear. Lows in the upper 30s. Northwest winds around 5 mph becoming southwest after midnight.

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

A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Not as cool with lows in the lower 50s. Chance of rain 40 percent.

Partly cloudy. A chance of showers and thunderstorms. Highs in the upper 70s. Lows in the lower 50s. Chance of rain 40 percent.

Partly cloudy. A chance of showers and thunderstorms. Highs in the upper 70s. Lows in the lower 50s. Chance of rain 40 percent.

Showers likely with a chance of thunderstorms. Highs in the upper 60s. Lows in the mid 40s. Chance of rain 60 percent.

Showers likely with a chance of thunderstorms. Highs in the upper 60s. Lows in the mid 40s. Chance of rain 60 percent.

Partly sunny with a chance of showers. Highs in the lower 60s. Chance of rain 50 percent.

Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s.

Mostly sunny. Highs in the lower 60s.

Clear. Low temperature around 45F. Dew point will be around 39F with an average humidity of 63%. Winds will be 6 mph from the SW.

Partly cloudy. High temperature around 67F. Dew point will be around 42F with an average humidity of 56%. Winds will be 7 mph from the W.

Clear. Low temperature around 49F. Dew point will be around 44F with an average humidity of 63%. Winds will be 2 mph from the SW.

Mostly cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 66F. Dew point will be around 46F with an average humidity of 60%. Winds will be 3 mph from the W.

Partly cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 49F. Dew point will be around 46F with an average humidity of 69%. Winds will be 2 mph from the NW.