10-Day Weather Forecast - Lake San Marcos, CA

Cloudy in the morning. . . Becoming partly cloudy. Highs 78 to 82 in the western valleys to 82 to 87 near the foothills. Light winds becoming west 10 mph in the afternoon.

Mostly clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 58 to 63. Areas of winds west to 10 mph in the evening becoming light.

Mostly cloudy in the morning. . . Becoming mostly sunny. Highs 77 to 81 in the western valleys to 82 to 87 near the foothills. Areas of winds west to 10 mph.

Mostly clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 57 to 61. Areas of winds west to 10 mph in the evening becoming light.

Partly cloudy with patchy fog in the morning. . . Becoming sunny. Highs 77 to 81 in the western valleys to 84 to 89 near the foothills.

Mostly clear. Lows 57 to 61.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 78 to 83 in the western valleys to 87 to 92 near the foothills.

Mostly clear. Lows 58 to 62.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 79 to 84 in the western valleys to 89 to 94 near the foothills.

Clear in the evening. . . Becoming partly cloudy. Lows 59 to 63.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 79 to 84 in the western valleys to 88 to 93 near the foothills.

Clear in the evening. . . Becoming partly cloudy. Lows 58 to 63.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 78 to 82 in the western valleys to 85 to 90 near the foothills.

Clear. Low temperature around 69F. Dew point will be around 59F with an average humidity of 63%. Winds will be 3 mph from the W.

Sunny. High temperature around 85F. Dew point will be around 61F with an average humidity of 52%. Winds will be 6 mph from the W.

Clear. Low temperature around 69F. Dew point will be around 59F with an average humidity of 63%. Winds will be 3 mph from the W.

Sunny. High temperature around 87F. Dew point will be around 61F with an average humidity of 51%. Winds will be 6 mph from the W.

Clear. Low temperature around 72F. Dew point will be around 60F with an average humidity of 60%. Winds will be 3 mph from the W.