10-Day Weather Forecast - San Marcos, CA

Partly cloudy with patchy fog in the morning. . . Becoming mostly sunny. Highs 82 to 86 in the western valleys to 89 to 94 near the foothills. Areas of winds west to 10 mph. . . Becoming 10 to 15 mph in the afternoon.

Clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 62 to 67. Areas of winds west to 10 mph in the evening becoming light.

Partly cloudy with patchy fog in the morning. . . Becoming sunny. Highs 82 to 86 in the western valleys to 90 to 95 near the foothills. Areas of winds southwest to 10 mph.

Clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 61 to 66.

Partly cloudy with patchy fog in the morning. . . Becoming sunny. Highs 82 to 86 in the western valleys to 89 to 94 near the foothills.

Clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 60 to 64.

Partly cloudy with patchy fog in the morning. . . Becoming sunny. Highs 80 to 85 in the western valleys to 87 to 92 near the foothills.

Clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 58 to 63.

Partly cloudy with patchy fog in the morning. . . Becoming sunny. Highs 78 to 83 in the western valleys to 86 to 91 near the foothills.

Clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 57 to 62.

Partly cloudy with patchy fog in the morning. . . Becoming sunny. Highs 78 to 82 in the western valleys to 84 to 89 near the foothills.

Mostly clear. Low temperature around 59F. Dew point will be around 60F with an average humidity of 93%. Winds will be 4 mph from the S.

Sunny. High temperature around 74F. Dew point will be around 64F with an average humidity of 83%. Winds will be 7 mph from the SW.

Clear. Low temperature around 57F. Dew point will be around 59F with an average humidity of 94%. Winds will be 3 mph from the SW.

Sunny. High temperature around 74F. Dew point will be around 63F with an average humidity of 82%. Winds will be 6 mph from the W.

Clear. Low temperature around 57F. Dew point will be around 59F with an average humidity of 93%. Winds will be 3 mph from the W.

Sunny. High temperature around 76F. Dew point will be around 64F with an average humidity of 79%. Winds will be 6 mph from the W.

Clear. Low temperature around 59F. Dew point will be around 60F with an average humidity of 91%. Winds will be 3 mph from the W.