10-Day Weather Forecast - Ontario, CA

Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Warmer. Highs 97 to 101. Light winds becoming west 10 mph in the afternoon. Chance of measurable precipitation 20 percent.

Mostly clear. Lows 70 to 75. Areas of winds west to 10 mph in the evening becoming light.

Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs 98 to 103. Areas of winds east to 10 mph becoming west with gusts to 25 mph in the afternoon. Chance of measurable precipitation 20 percent.

Mostly clear. Lows 70 to 75. Areas of winds southwest to 10 mph in the evening becoming light.

Mostly sunny. Highs 94 to 100.

Mostly clear. Lows 67 to 72.

Mostly sunny. Highs 90 to 96.

Mostly clear. Lows 60 to 67.

Mostly sunny. Highs 87 to 92.

Clear. Lows 57 to 64.

Mostly sunny. Highs 86 to 92.

Clear. Lows 58 to 65.

Mostly sunny. Highs 87 to 93.

Clear. Low temperature around 69F. Dew point will be around 63F with an average humidity of 69%. Winds will be 5 mph from the W.

Sunny. High temperature around 85F. Dew point will be around 64F with an average humidity of 58%. Winds will be 6 mph from the SW.

Clear. Low temperature around 69F. Dew point will be around 64F with an average humidity of 71%. Winds will be 5 mph from the W.

Sunny. High temperature around 85F. Dew point will be around 65F with an average humidity of 60%. Winds will be 6 mph from the SW.

Clear. Low temperature around 69F. Dew point will be around 64F with an average humidity of 70%. Winds will be 5 mph from the W.