10-Day Weather Forecast - Costa Mesa, CA

Mostly cloudy with patchy fog in the morning. . . Becoming mostly sunny. Highs around 73 at the beaches to 75 to 79 farther inland and near higher coastal terrain. Light winds becoming southwest 10 mph in the afternoon.

Partly cloudy in the evening. . . Becoming cloudy. 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 around 75 at the beaches to 77 to 81 farther inland and near higher coastal terrain. Light winds becoming west 10 to 15 mph in the afternoon.

Partly cloudy in the evening. . . Becoming mostly cloudy. Lows 62 to 66. Areas of winds west 10 mph in the evening becoming light.

Mostly cloudy in the morning. . . Becoming mostly sunny. Highs around 74 at the beaches to 75 to 79 farther inland and near higher coastal terrain.

Mostly clear in the evening. . . Becoming partly cloudy. Lows 61 to 65.

Partly cloudy. Highs 73 to 78.

Mostly clear in the evening. . . Becoming partly cloudy. Lows 61 to 65.

Partly cloudy. Highs 73 to 78.

Mostly clear in the evening. . . Becoming partly cloudy. Lows 61 to 64.

Partly cloudy. Highs 73 to 76 at the beaches to 75 to 80 farther inland and near higher coastal terrain.

Mostly clear in the evening. . . Becoming partly cloudy. Lows 61 to 65.

Mostly cloudy in the morning. . . Becoming partly cloudy. Highs 73 to 78.

Clear. Low temperature around 66F. Dew point will be around 59F with an average humidity of 74%. Winds will be 4 mph from the SW.

Sunny. High temperature around 74F. Dew point will be around 58F with an average humidity of 62%. Winds will be 6 mph from the SW.

Clear. Low temperature around 64F. Dew point will be around 59F with an average humidity of 77%. Winds will be 4 mph from the SW.

Sunny. High temperature around 72F. Dew point will be around 57F with an average humidity of 64%. Winds will be 6 mph from the SW.

Clear. Low temperature around 62F. Dew point will be around 57F with an average humidity of 77%. Winds will be 5 mph from the SW.