10-Day Weather Forecast - Rancho Cucamonga, CA

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 85 to 90. Light winds becoming southwest 10 to 15 mph with gusts to 25 mph in the afternoon.

Mostly clear. Lows around 54 in wind sheltered areas to 55 to 63 in warmer locations. Areas of winds south to 10 mph in the evening becoming light.

Mostly sunny. Highs 81 to 85. Areas of winds south to 10 mph. . . Becoming west 10 to 20 mph with gusts to 35 mph in the afternoon.

Mostly clear in the evening. . . Becoming partly cloudy. Cooler. Lows 46 to 49 in wind sheltered areas to 49 to 55 in warmer locations. Areas of winds southwest 10 to 15 mph with gusts to 25 mph in the evening becoming light.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 69 to 75.

Mostly clear. Lows 44 to 49.

Mostly sunny. Highs 72 to 77.

Clear. Lows 45 to 51.

Mostly sunny. Highs 73 to 78.

Mostly clear. Lows 45 to 51.

Mostly sunny. Highs 72 to 77.

Mostly clear. Lows 45 to 52.

Mostly sunny. Highs 74 to 80.

Clear. Low temperature around 55F. Dew point will be around 28F with an average humidity of 30%. Winds will be 8 mph from the N.

Sunny. High temperature around 74F. Dew point will be around 28F with an average humidity of 22%. Winds will be 6 mph from the N.

Clear. Low temperature around 54F. Dew point will be around 34F with an average humidity of 39%. Winds will be 3 mph from the N.

Mostly sunny. High temperature around 73F. Dew point will be around 37F with an average humidity of 32%. Winds will be 4 mph from the W.

Mostly clear. Low temperature around 53F. Dew point will be around 40F with an average humidity of 51%. Winds will be 1 mph from the W.