10-Day Weather Forecast - Costa Mesa, CA

Partly cloudy in the morning. . . Becoming mostly sunny. Patchy dense fog in the morning. Highs 72 to 76 at the beaches to 76 to 80 farther inland and near higher coastal terrain. Areas of winds west to 10 mph. . . Becoming 10 to 15 mph in the afternoon.

Mostly clear in the evening. . . Becoming partly cloudy. Patchy dense fog. Lows 61 to 65. Areas of winds west 10 mph in the evening becoming light.

Mostly cloudy with patchy fog in the morning. . . Becoming partly cloudy. Highs 71 to 75 at the beaches to 76 to 79 farther inland and near higher coastal terrain. Light winds becoming southwest 10 mph in the afternoon.

Mostly clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 61 to 65. Areas of winds southwest 10 mph in the evening becoming light.

Mostly cloudy with patchy fog in the morning. . . Becoming partly cloudy. Highs 73 to 77 at the beaches to 77 to 82 farther inland and near higher coastal terrain.

Mostly clear in the evening. . . Becoming partly cloudy. Lows 62 to 66.

Partly cloudy. Highs 73 to 76 at the beaches to 77 to 82 farther inland and near higher coastal terrain.

Clear in the evening. . . Becoming partly cloudy. Lows 62 to 66.

Partly cloudy. Highs 72 to 75 at the beaches to 75 to 79 farther inland and near higher coastal terrain.

Mostly clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 62 to 66.

Mostly cloudy in the morning. . . Becoming partly cloudy. Highs 72 to 75 at the beaches to 75 to 80 farther inland and near higher coastal terrain.

Mostly clear in the evening. . . Becoming partly cloudy. Lows 62 to 66.

Mostly cloudy in the morning. . . Becoming partly cloudy. Highs 73 to 76 at the beaches to 76 to 81 farther inland and near higher coastal terrain.

Clear. Low temperature around 73F. Dew point will be around 62F with an average humidity of 65%. Winds will be 4 mph from the SW.

Sunny. High temperature around 86F. Dew point will be around 63F with an average humidity of 52%. Winds will be 6 mph from the SW.

Clear. Low temperature around 75F. Dew point will be around 64F with an average humidity of 62%. Winds will be 3 mph from the SW.

Sunny. High temperature around 84F. Dew point will be around 64F with an average humidity of 54%. Winds will be 6 mph from the SW.

Clear. Low temperature around 74F. Dew point will be around 65F with an average humidity of 67%. Winds will be 4 mph from the SW.