10-Day Weather Forecast - Waterloo, IL

Mostly sunny. A slight chance of showers and thunderstorms this morning. Hot with highs in the upper 90s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 113.

Mostly clear. Humid with lows in the mid 70s. South winds around 5 mph. Heat index values up to 112 early in the evening.

Mostly sunny. Hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 112.

Partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 111 early in the evening.

Mostly sunny. Hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 113.

Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 110 early in the evening.

Partly cloudy. Highs in the upper 80s.

Partly cloudy. Lows in the upper 60s.

Mostly clear. Highs in the upper 80s.

Mostly clear. Lows in the lower 70s.

Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105 in the afternoon.

Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 30 percent. Heat index values up to 100 early in the evening.

Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 68F. Dew point will be around 69F with an average humidity of 85%. Winds will be 3 mph from the NE.

Mostly sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 86F. Dew point will be around 69F with an average humidity of 72%. Winds will be 2 mph from the NE.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 67F. Dew point will be around 67F with an average humidity of 81%. Winds will be 2 mph from the E.

Sunny. High temperature around 84F. Dew point will be around 68F with an average humidity of 73%. Winds will be 3 mph from the NE.

Clear. Low temperature around 65F. Dew point will be around 67F with an average humidity of 85%. Winds will be 3 mph from the E.