10-Day Weather Forecast - Ontario, WI

Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values in the mid 90s this afternoon.

Mostly cloudy with a chance of thunderstorms. Showers likely in the evening then a chance of showers after midnight. Humid with lows in the mid 60s. West winds 5 to 10 mph becoming southwest after midnight. Chance of rain 70 percent.

Mostly cloudy in the morning then partly sunny with a chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 40 percent.

Partly cloudy. Lows in the lower 60s. Northeast winds around 5 mph in the evening becoming light and variable.

Mostly sunny. Highs in the mid 80s. Light winds.

Partly cloudy. Lows in the lower 60s. Highs in the mid 80s.

Partly cloudy. Lows in the lower 60s. Highs in the mid 80s.

Partly cloudy. Lows in the lower 60s. Highs in the mid 80s.

Mostly sunny. Highs in the upper 80s.

Clear. Lows in the mid 60s.

Hot. Mostly clear. Highs around 90. Lows in the upper 60s.

Hot. Mostly clear. Highs around 90. Lows in the upper 60s.

Hot. Mostly sunny. Highs around 90.

Clear. Low temperature around 66F. Dew point will be around 63F with an average humidity of 72%. Winds will be 3 mph from the W.

Partly cloudy with widely scattered thunderstorms. Chance of storms 25%. High temperature around 83F. Dew point will be around 62F with an average humidity of 62%. Winds will be 2 mph from the NW.

Mostly clear with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 64F. Dew point will be around 62F with an average humidity of 73%. Winds will be 2 mph from the W.

Sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 81F. Dew point will be around 60F with an average humidity of 62%. Winds will be 2 mph from the W.

Clear with a 25% chance for rain and thunderstorms. Low temperature around 63F. Dew point will be around 60F with an average humidity of 73%. Winds will be 3 mph from the W.