10-Day Weather Forecast - San Marcos, CA

Partly cloudy in the morning..becoming mostly sunny. Highs 94 to 99. Areas of winds south to 10 mph.

Mostly clear. Lows 68 to 73. Light winds.

Mostly sunny. Highs 87 to 92 in the western valleys to 90 to 95 near the foothills. Areas of winds south to 10 mph.

Mostly clear. Lows 61 to 66.

Partly cloudy with patchy fog in the morning.. becoming mostly sunny. Highs 81 to 86 in the western valleys to 84 to 89 near the foothills.

Mostly clear. Lows 55 to 61.

Partly cloudy in the morning..becoming sunny. Highs 80 to 84 in the western valleys to 82 to 87 near the foothills.

Mostly clear. Lows 53 to 60.

Partly cloudy in the morning..becoming mostly sunny. Highs 80 to 83 in the western valleys to 82 to 87 near the foothills.

Clear. Lows 53 to 59.

Mostly sunny. Highs 79 to 83 in the western valleys to 81 to 86 near the foothills.

Clear. Low temperature around 62F. Dew point will be around 61F with an average humidity of 87%. Winds will be 3 mph from the W.

Sunny. High temperature around 79F. Dew point will be around 63F with an average humidity of 70%. Winds will be 5 mph from the SW.

Clear. Low temperature around 61F. Dew point will be around 61F with an average humidity of 87%. Winds will be 3 mph from the W.

Sunny. High temperature around 78F. Dew point will be around 62F with an average humidity of 68%. Winds will be 5 mph from the W.

Clear. Low temperature around 61F. Dew point will be around 61F with an average humidity of 86%. Winds will be 3 mph from the W.

Sunny. High temperature around 79F. Dew point will be around 62F with an average humidity of 66%. Winds will be 5 mph from the W.

Clear. Low temperature around 61F. Dew point will be around 61F with an average humidity of 86%. Winds will be 3 mph from the W.