10-Day Weather Forecast - Diamond Bar, CA

Mostly cloudy. A 50 percent chance of rain in the afternoon. Highs in the upper 60s to mid 70s. Southwest winds around 15 mph in the afternoon.

Rain likely in the evening becoming partly cloudy after midnight. Lows in the mid 40s to lower 50s. Southwest winds around 15 mph in the evening. Chance of precipitation 70 percent.

Sunny. Highs in the upper 60s to mid 70s.

Mostly clear. Lows around 50.

Partly cloudy. Highs in the mid 70s.

Mostly clear in the evening then partly cloudy. Lows in the lower to mid 50s.

Partly cloudy. Highs in the lower to mid 70s.

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

Mostly cloudy with a 20 percent chance of rain. Highs in the mid 60s to around 70.

Partly cloudy in the evening becoming mostly cloudy with a 20 percent chance of rain after midnight. Lows in the lower 50s.

Mostly cloudy in the morning then partly cloudy. Highs in the mid 60s to around 70.

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

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

Partly cloudy. Low temperature around 52F. Dew point will be around 52F with an average humidity of 91%. Winds will be 5 mph from the SW.

Partly cloudy. High temperature around 68F. Dew point will be around 54F with an average humidity of 71%. Winds will be 7 mph from the SW.

Mostly clear. Low temperature around 53F. Dew point will be around 53F with an average humidity of 89%. Winds will be 5 mph from the SW.

Cloudy. High temperature around 69F. Dew point will be around 54F with an average humidity of 69%. Winds will be 6 mph from the SW.

Partly cloudy. Low temperature around 53F. Dew point will be around 54F with an average humidity of 88%. Winds will be 4 mph from the SW.