10-Day Weather Forecast - Marion, IL

Patchy fog in the morning. Sunny with highs in the mid 90s. East winds around 5 mph. Highest heat index readings heat index readings up to 105 in the afternoon.

Mostly clear. Lows in the mid 70s. East winds around 5 mph in the evening becoming light and variable.

Mostly sunny in the morning then mostly cloudy with showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 80s. Temperature falling to around 80 in the afternoon. North winds 5 to 10 mph. Chance of rain 60 percent.

Mostly cloudy. A chance of showers in the evening. Lows in the upper 60s. Chance of rain 50 percent.

Partly sunny. Highs around 80.

Partly cloudy. Lows in the lower 60s.

Mostly clear. Highs in the lower 80s. Lows in the lower 60s.

Mostly clear. Highs in the lower 80s. Lows in the lower 60s.

Mostly sunny. Highs in the mid 80s.

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 60s.

Mostly sunny. Highs in the upper 80s.

Mostly clear with a 35% chance for rain and thunderstorms. Low temperature around 73F. Dew point will be around 74F with an average humidity of 92%. Winds will be 4 mph from the S.

Sunny with a 40% chance for rain and thunderstorms. High temperature around 90F. Dew point will be around 78F with an average humidity of 79%. Winds will be 7 mph from the S.

Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 76F. Dew point will be around 76F with an average humidity of 85%. Winds will be 7 mph from the S.

Sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 92F. Dew point will be around 78F with an average humidity of 77%. Winds will be 8 mph from the SW.

Clear. Low temperature around 76F. Dew point will be around 76F with an average humidity of 82%. Winds will be 7 mph from the S.

Sunny with a 25% chance for rain and thunderstorms. High temperature around 94F. Dew point will be around 78F with an average humidity of 73%. Winds will be 6 mph from the SW.

Clear with a 30% chance for rain and thunderstorms. Low temperature around 76F. Dew point will be around 75F with an average humidity of 79%. Winds will be 6 mph from the S.