10-Day Weather Forecast - Diamond Bar, CA

Sunny except for patchy low clouds and fog in the morning. Fog locally dense with visibility one quarter mile or less. Highs in the upper 70s to mid 80s.

Clear except for patchy low clouds and fog after midnight. Fog locally dense with visibility one quarter mile or less. Lows in the mid 40s to mid 50s.

Sunny except for patchy low clouds and fog in the morning. Fog locally dense with visibility one quarter mile or less. Highs in the upper 70s to mid 80s.

Partly cloudy. Lows in the lower to mid 50s.

Partly cloudy. Highs in the mid 70s to around 80.

Partly cloudy in the evening then mostly clear. Lows in the lower to mid 50s.

Sunny. Highs in the mid 70s.

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

Sunny. Highs in the mid 70s.

Mostly clear. Lows around 50.

Partly cloudy in the morning then mostly cloudy. Highs in the lower 70s.

Partly cloudy. Lows around 50.

Partly cloudy. Highs in the mid 60s to around 70.

Partly cloudy. Low temperature around 48F. Dew point will be around 46F with an average humidity of 80%. Winds will be 3 mph from the S.

Sunny. High temperature around 66F. Dew point will be around 47F with an average humidity of 64%. Winds will be 4 mph from the SW.

Clear. Low temperature around 47F. Dew point will be around 45F with an average humidity of 80%. Winds will be 2 mph from the E.

Sunny. High temperature around 68F. Dew point will be around 44F with an average humidity of 52%. Winds will be 2 mph from the E.

Clear. Low temperature around 48F. Dew point will be around 42F with an average humidity of 65%. Winds will be 3 mph from the E.

Sunny. High temperature around 71F. Dew point will be around 39F with an average humidity of 40%. Winds will be 2 mph from the E.

Mostly clear. Low temperature around 50F. Dew point will be around 39F with an average humidity of 56%. Winds will be 3 mph from the NE.