10-Day Weather Forecast - Costa Mesa, CA

Mostly cloudy in the morning. . . Becoming partly cloudy. Highs around 68 at the beaches to 70 to 74 farther inland and near higher coastal terrain. Light winds becoming south 10 mph in the afternoon.

Partly cloudy. Lows 52 to 55. Areas of winds south 10 mph becoming east with gusts to 25 mph overnight.

Mostly sunny. Highs 72 to 75 at the beaches to 76 to 79 farther inland and near higher coastal terrain. Areas of winds northeast 10 to 20 mph becoming west in the afternoon. Gusts to 30 mph.

Mostly clear. Lows 53 to 56. Areas of winds west 10 to 20 mph with gusts to 30 mph in the evening becoming light.

Partly cloudy. Highs 72 to 75 at the beaches to 78 farther inland and near higher coastal terrain.

Partly cloudy. Lows around 55.

Partly cloudy. Highs 70 to 74 at the beaches to 75 to 78 farther inland and near higher coastal terrain.

Mostly clear. Lows 52 to 55.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs around 69 at the beaches to 72 to 75 farther inland and near higher coastal terrain.

Mostly clear in the evening. . . Becoming partly cloudy. Lows around 53.

Partly cloudy. Highs around 69 at the beaches to 72 to 75 farther inland and near higher coastal terrain.

Mostly clear. Lows around 54.

Partly cloudy. Highs 68 to 73.

Clear. Low temperature around 55F. Dew point will be around 52F with an average humidity of 81%. Winds will be 4 mph from the W.

Sunny. High temperature around 67F. Dew point will be around 51F with an average humidity of 62%. Winds will be 6 mph from the SW.

Clear. Low temperature around 56F. Dew point will be around 53F with an average humidity of 80%. Winds will be 4 mph from the SW.

Sunny. High temperature around 67F. Dew point will be around 52F with an average humidity of 65%. Winds will be 6 mph from the SW.

Partly cloudy. Low temperature around 56F. Dew point will be around 54F with an average humidity of 84%. Winds will be 4 mph from the SW.