10-Day Weather Forecast - Diamond Bar, CA

Rain with a slight chance of thunderstorms. Rain may be heavy at times in the morning. Highs around 60.

Rain likely in the evening becoming partly cloudy with a slight chance of rain after midnight. Lows in the lower to mid 40s. Chance of precipitation 70 percent.

Partly cloudy in the morning then sunny. Highs in the mid 50s to around 60.

Mostly clear. Lows in the upper 30s to mid 40s.

Sunny. Highs in the upper 50s to mid 60s.

Mostly clear. Lows in the lower to mid 40s.

Sunny. Highs in the lower to mid 60s.

Mostly clear. Lows in the lower to mid 40s.

Sunny. Highs in the mid to upper 60s.

Mostly clear in the evening then partly cloudy. Lows in the mid to upper 40s.

Mostly cloudy. A slight chance of rain in the morning then a chance of rain in the afternoon. Highs in the mid 60s. Chance of precipitation 30 percent.

Mostly cloudy with a 50 percent chance of rain. Lows around 50.

Mostly cloudy with a 50 percent chance of rain. Highs in the lower to mid 60s.

Cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 50F. Dew point will be around 52F with an average humidity of 99%. Winds will be 4 mph from the S.

Cloudy with a chance of rain. Chance of precipitation 50%. High temperature around 60F. Dew point will be around 55F with an average humidity of 92%. Winds will be 6 mph from the S.

Cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 47F. Dew point will be around 50F with an average humidity of 98%. Winds will be 4 mph from the S.

Mostly sunny. High temperature around 62F. Dew point will be around 49F with an average humidity of 74%. Winds will be 2 mph from the W.

Clear. Low temperature around 46F. Dew point will be around 44F with an average humidity of 80%. Winds will be 2 mph from the NE.