10-Day Weather Forecast - Diamond Bar, CA

Sunny. Highs 99 to 108.

Mostly clear. Lows in the lower to mid 70s.

Partly cloudy. Highs 99 to 108.

Partly cloudy in the evening then mostly cloudy. Lows in the lower to mid 70s.

Partly cloudy. Highs 98 to 107.

Mostly clear. Lows in the lower 70s.

Sunny. Highs 95 to 100.

Mostly clear. Lows around 70.

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

Mostly clear. Lows in the mid 60s.

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

Clear. Low temperature around 62F. Dew point will be around 57F with an average humidity of 65%. Winds will be 7 mph from the SW.

Sunny. High temperature around 85F. Dew point will be around 54F with an average humidity of 44%. Winds will be 8 mph from the SW.

Clear. Low temperature around 64F. Dew point will be around 55F with an average humidity of 61%. Winds will be 6 mph from the SW.

Sunny. High temperature around 87F. Dew point will be around 57F with an average humidity of 46%. Winds will be 8 mph from the SW.

Mostly clear. Low temperature around 64F. Dew point will be around 57F with an average humidity of 63%. Winds will be 6 mph from the SW.

Sunny. High temperature around 90F. Dew point will be around 58F with an average humidity of 45%. Winds will be 8 mph from the SW.

Clear. Low temperature around 65F. Dew point will be around 59F with an average humidity of 64%. Winds will be 6 mph from the SW.