10-Day Weather Forecast - Costa Mesa, CA

Mostly sunny. Highs around 65 at the beaches to 66 to 69 farther inland and near higher coastal terrain. Light winds.

Mostly clear. Lows around 50. Light winds.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs around 65 at the beaches to 66 to 69 farther inland and near higher coastal terrain. Light winds.

Mostly clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows around 51. Light winds.

Partly cloudy with patchy fog in the morning. . . Becoming mostly sunny. Highs 66 to 69 at the beaches to 71 farther inland and near higher coastal terrain.

Mostly clear. Lows around 53.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs around 71 at the beaches to 75 farther inland and near higher coastal terrain.

Mostly clear. Lows around 56.

Mostly sunny. Highs 71 to 74 at the beaches to 75 to 78 farther inland and near higher coastal terrain.

Mostly clear. Lows around 56.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs around 71 at the beaches to 73 to 76 farther inland and near higher coastal terrain.

Mostly clear. Lows 54 to 57.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 69 to 72 at the beaches to 73 to 76 farther inland and near higher coastal terrain.

Clear. Low temperature around 57F. Dew point will be around 49F with an average humidity of 66%. Winds will be 2 mph from the E.

Sunny. High temperature around 71F. Dew point will be around 50F with an average humidity of 53%. Winds will be 2 mph from the SW.

Clear. Low temperature around 56F. Dew point will be around 50F with an average humidity of 71%. Winds will be 3 mph from the E.

Sunny. High temperature around 69F. Dew point will be around 50F with an average humidity of 59%. Winds will be 3 mph from the SW.

Mostly clear. Low temperature around 54F. Dew point will be around 49F with an average humidity of 75%. Winds will be 2 mph from the E.