10-Day Weather Forecast - Plymouth, IL

Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106.

Partly cloudy in the evening, then becoming mostly clear. Humid with lows in the lower 70s. Southwest winds around 5 mph. Heat index values up to 104 early in the evening.

Sunny, hot with highs in the mid 90s. West winds around 5 mph, becoming north around 5 mph in the afternoon. Heat index values up to 106.

Mostly clear. Humid with lows around 70. Northeast winds around 5 mph. Heat index values up to 104 early in the evening.

Mostly clear. Highs in the upper 80s.

Mostly clear. Lows in the upper 60s.

Mostly sunny. Highs in the upper 80s.

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

Mostly sunny. Hot with highs in the mid 90s.

Mostly clear. Lows in the mid 70s.

Mostly sunny. Hot with highs in the mid 90s.

Partly cloudy. A chance of showers after midnight. Lows in the lower 70s. Chance of rain 30 percent.

Mostly sunny. Hot with highs around 90.

Mostly clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 69F. Dew point will be around 66F with an average humidity of 73%. Winds will be 2 mph from the E.

Mostly sunny. High temperature around 84F. Dew point will be around 66F with an average humidity of 67%. Winds will be 2 mph from the E.

Clear. Low temperature around 67F. Dew point will be around 65F with an average humidity of 75%. Winds will be 4 mph from the SE.

Sunny. High temperature around 86F. Dew point will be around 66F with an average humidity of 66%. Winds will be 4 mph from the S.

Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 66F. Dew point will be around 65F with an average humidity of 75%. Winds will be 4 mph from the S.