10-Day Weather Forecast - Marietta, IL

Cloudy. Showers with a slight chance of thunderstorms in the morning then showers likely with a chance of thunderstorms in the afternoon. Much cooler with highs in the mid 50s. Northeast winds around 15 mph with gusts up to 25 mph. Chance of rain 90 percent.

Showers likely with a chance of thunderstorms in the evening then a chance of showers after midnight. Lows around 50. Temperature rising into the upper 50s after midnight. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.

A chance of thunderstorms. Showers breezy and not as cool. More humid with highs in the mid 70s. South winds 15 to 25 mph with gusts up to 35 mph. Chance of rain near 100 percent.

Partly cloudy. A chance of showers in the evening. Lows around 50. Southwest winds 15 to 20 mph with gusts up to 30 mph becoming west 5 to 10 mph with gusts up to 20 mph after midnight. Chance of rain 50 percent.

Partly sunny. A chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 50 percent.

Showers with a chance of thunderstorms. Lows in the upper 40s. Chance of rain 90 percent.

Mostly cloudy with a 50 percent chance of showers. Much cooler with highs in the upper 50s.

Mostly cloudy. Cooler with lows in the lower 30s.

Mostly sunny. Highs in the lower 50s.

Mostly clear. Lows in the lower 30s. Highs in the lower 60s.

Mostly clear. Lows in the lower 30s. Highs in the lower 60s.

Partly cloudy. Lows around 40. Highs in the mid 60s.

Partly cloudy. Lows around 40. Highs in the mid 60s.

Partly cloudy. Low temperature around 40F. Dew point will be around 37F with an average humidity of 68%. Winds will be 5 mph from the SE.

Mostly sunny. High temperature around 60F. Dew point will be around 39F with an average humidity of 62%. Winds will be 7 mph from the S.

Partly cloudy. Low temperature around 46F. Dew point will be around 40F with an average humidity of 66%. Winds will be 9 mph from the S.

Partly cloudy. High temperature around 63F. Dew point will be around 45F with an average humidity of 67%. Winds will be 10 mph from the S.

Mostly cloudy. Low temperature around 50F. Dew point will be around 47F with an average humidity of 74%. Winds will be 9 mph from the S.