10-Day Weather Forecast - Diamond Bar, CA

Sunny. Highs in the lower to mid 80s.

Clear in the evening then mostly cloudy. Lows in the mid 40s to mid 50s.

Mostly cloudy in the morning then sunny. Highs in the lower to mid 70s.

Clear in the evening then areas of low clouds and fog. Lows around 50.

Areas of low clouds and fog in the morning then sunny. Highs in the mid 70s.

Clear. Lows in the lower to mid 50s.

Partly cloudy in the morning then sunny. Highs in the mid to upper 70s.

Mostly clear. Lows in the upper 40s to mid 50s.

Sunny. Highs in the mid 70s.

Clear. Lows in the lower 50s.

Sunny. Highs in the mid 70s.

Mostly clear. Lows in the lower to mid 50s.

Sunny. Highs around 80.

Clear. Low temperature around 54F. Dew point will be around 34F with an average humidity of 40%. Winds will be 6 mph from the NE.

Sunny. High temperature around 77F. Dew point will be around 36F with an average humidity of 28%. Winds will be 4 mph from the NE.

Clear. Low temperature around 53F. Dew point will be around 40F with an average humidity of 51%. Winds will be 2 mph from the SW.

Sunny. High temperature around 73F. Dew point will be around 43F with an average humidity of 40%. Winds will be 5 mph from the SW.

Clear. Low temperature around 51F. Dew point will be around 46F with an average humidity of 69%. Winds will be 3 mph from the SW.