10-Day Weather Forecast - Diamond Bar, CA

Sunny. Highs in the mid 80s to around 90.

Mostly clear. Lows in the lower 60s.

Partly cloudy in the morning then sunny. Highs in the lower to mid 80s.

Mostly clear. Lows in the lower 60s.

Areas of low clouds and fog in the morning then sunny. Highs in the 80s to around 90.

Mostly clear in the evening then partly cloudy. Lows in the lower to mid 60s.

Areas of low clouds and fog in the morning then sunny. Highs in the lower to mid 80s.

Mostly clear. Lows in the lower 60s.

Partly cloudy in the morning then sunny. Highs in the upper 70s to mid 80s.

Mostly clear in the evening then partly cloudy. Lows around 60.

Partly cloudy in the morning then sunny. Highs in the upper 70s to mid 80s.

Mostly clear. Lows around 60.

Partly cloudy in the morning then sunny. Highs in the upper 70s to mid 80s.

Clear. Low temperature around 64F. Dew point will be around 57F with an average humidity of 68%. Winds will be 6 mph from the SW.

Sunny. High temperature around 85F. Dew point will be around 58F with an average humidity of 51%. Winds will be 8 mph from the SW.

Clear. Low temperature around 62F. Dew point will be around 57F with an average humidity of 70%. Winds will be 7 mph from the SW.

Sunny. High temperature around 81F. Dew point will be around 57F with an average humidity of 54%. Winds will be 9 mph from the SW.

Clear. Low temperature around 60F. Dew point will be around 56F with an average humidity of 75%. Winds will be 7 mph from the SW.