10-Day Weather Forecast - San Marcos, CA

Partly cloudy with patchy fog in the morning. . . Becoming mostly sunny. Highs 69 to 74. Areas of winds west to 10 mph. . . Becoming 10 to 15 mph with gusts to 25 mph in the afternoon.

Mostly cloudy. A chance of showers. Lows 46 to 52. Areas of winds northwest 10 to 15 mph. Gusts to 25 mph in the evening. Chance of measurable precipitation 40 percent.

Mostly cloudy in the morning. . . Becoming partly cloudy. Highs around 70 in the western valleys to 63 to 68 near the foothills. Areas of winds northwest 10 to 15 mph. Gusts to 25 mph in the afternoon.

Partly cloudy. Patchy fog overnight. Lows 40 to 48 in wind sheltered areas to 44 to 49 in warmer locations. Areas of winds northwest 10 to 15 mph with gusts to 25 mph in the evening becoming light.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 72 to 77.

Partly cloudy. Lows 47 to 52.

Partly cloudy. Highs 70 to 75.

Partly cloudy. Lows 49 to 54.

Mostly cloudy in the morning. . . Becoming partly cloudy. A slight chance of showers. Highs around 70 in the western valleys to 62 to 67 near the foothills.

Partly cloudy. Lows 48 to 53.

Partly cloudy. Highs around 70 in the western valleys to 60 to 65 near the foothills.

Partly cloudy. Lows 47 to 52.

Partly cloudy. Highs 71 to 74 in the western valleys to 66 to 71 near the foothills.

Partly cloudy. Low temperature around 54F. Dew point will be around 54F with an average humidity of 90%. Winds will be 2 mph from the W.

Mostly cloudy. High temperature around 66F. Dew point will be around 56F with an average humidity of 78%. Winds will be 5 mph from the W.

Partly cloudy. Low temperature around 55F. Dew point will be around 54F with an average humidity of 87%. Winds will be 3 mph from the W.

Mostly cloudy. High temperature around 67F. Dew point will be around 56F with an average humidity of 76%. Winds will be 5 mph from the W.

Partly cloudy. Low temperature around 56F. Dew point will be around 55F with an average humidity of 87%. Winds will be 3 mph from the W.