10-Day Weather Forecast - Diamond Bar, CA

Partly cloudy except for patchy low clouds and fog in the morning. Fog locally dense with visibility one quarter mile or less. Highs in the lower to mid 90s.

Partly cloudy. Lows in the mid to upper 60s.

Partly cloudy. Highs in the upper 80s to mid 90s.

Mostly clear except for patchy low clouds and fog after midnight. Lows in the mid 60s.

Partly cloudy except for patchy low clouds and fog in the morning. Highs in the mid 80s to around 90.

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

Partly cloudy. Highs in the mid to upper 80s.

Mostly clear. Lows in the lower to mid 60s.

Mostly cloudy in the morning then partly cloudy. Highs in the lower to mid 80s.

Partly cloudy in the evening then mostly cloudy. Lows in the lower to mid 60s.

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

Mostly clear. Low temperature around 64F. Dew point will be around 62F with an average humidity of 81%. Winds will be 7 mph from the SW.

Mostly sunny. High temperature around 84F. Dew point will be around 64F with an average humidity of 65%. Winds will be 8 mph from the SW.

Clear. Low temperature around 63F. Dew point will be around 63F with an average humidity of 85%. Winds will be 7 mph from the SW.

Sunny. High temperature around 84F. Dew point will be around 64F with an average humidity of 66%. Winds will be 9 mph from the SW.

Clear. Low temperature around 63F. Dew point will be around 64F with an average humidity of 85%. Winds will be 7 mph from the SW.

Sunny. High temperature around 85F. Dew point will be around 64F with an average humidity of 63%. Winds will be 9 mph from the SW.

Mostly clear. Low temperature around 64F. Dew point will be around 63F with an average humidity of 82%. Winds will be 7 mph from the SW.