10-Day Weather Forecast - Costa Mesa, CA

Mostly cloudy in the morning. . . Becoming partly cloudy. Highs 64 to 69. Areas of winds northwest 10 to 15 mph. Gusts to 25 mph in the afternoon.

Partly cloudy. Lows 50 to 55. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 67 to 72. Areas of winds southwest to 10 mph becoming west with gusts to 25 mph in the afternoon.

Partly cloudy. Lows around 53.

Partly cloudy. Highs 69 to 74.

Partly cloudy. A slight chance of showers overnight. Lows around 55.

Partly cloudy. Highs around 69 at the beaches to 71 to 74 farther inland and near higher coastal terrain.

Mostly clear. Lows 53 to 56.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs around 71 at the beaches to 73 to 77 farther inland and near higher coastal terrain.

Mostly clear. Lows 54 to 57.

Partly cloudy. Highs around 71 at the beaches to 74 to 77 farther inland and near higher coastal terrain.

Partly cloudy. Low temperature around 60F. Dew point will be around 55F with an average humidity of 78%. Winds will be 4 mph from the SW.

Partly cloudy. High temperature around 69F. Dew point will be around 54F with an average humidity of 67%. Winds will be 6 mph from the SW.

Partly cloudy. Low temperature around 58F. Dew point will be around 53F with an average humidity of 75%. Winds will be 4 mph from the SW.

Mostly cloudy. High temperature around 66F. Dew point will be around 53F with an average humidity of 67%. Winds will be 5 mph from the SW.

Partly cloudy. Low temperature around 58F. Dew point will be around 54F with an average humidity of 79%. Winds will be 4 mph from the SW.

Cloudy. High temperature around 66F. Dew point will be around 54F with an average humidity of 69%. Winds will be 5 mph from the SW.

Mostly clear. Low temperature around 58F. Dew point will be around 54F with an average humidity of 79%. Winds will be 3 mph from the SW.