10-Day Weather Forecast - San Marcos, CA

Mostly sunny. Highs 82 to 85 in the western valleys to 85 to 90 near the foothills. Areas of winds east to 10 mph becoming west 10 mph in the afternoon.

Mostly clear. Lows 58 to 63. Light winds.

Partly cloudy with patchy fog in the morning.. becoming mostly sunny. Highs 82 to 87 in the western valleys to 87 to 92 near the foothills. Light winds becoming west 10 mph in the afternoon.

Mostly clear. Lows 61 to 65.

Partly cloudy with patchy fog in the morning..becoming mostly sunny. Highs 84 to 89 in the western valleys to 89 to 94 near the foothills.

Mostly clear in the evening..becoming partly cloudy. Lows 63 to 67.

Partly cloudy. Highs 87 to 92.

Mostly clear in the evening..becoming partly cloudy. Lows 61 to 66.

Partly cloudy. Highs 82 to 87.

Mostly clear in the evening..becoming partly cloudy. Lows 57 to 63.

Partly cloudy in the morning..becoming mostly sunny. Highs 80 to 85.

Partly cloudy. Low temperature around 66F. Dew point will be around 59F with an average humidity of 75%. Winds will be 4 mph from the W.

Sunny. High temperature around 82F. Dew point will be around 61F with an average humidity of 58%. Winds will be 4 mph from the W.

Clear. Low temperature around 67F. Dew point will be around 60F with an average humidity of 70%. Winds will be 3 mph from the E.

Sunny. High temperature around 82F. Dew point will be around 61F with an average humidity of 56%. Winds will be 4 mph from the W.

Clear. Low temperature around 68F. Dew point will be around 61F with an average humidity of 71%. Winds will be 3 mph from the W.

Sunny. High temperature around 83F. Dew point will be around 62F with an average humidity of 57%. Winds will be 4 mph from the W.

Clear. Low temperature around 69F. Dew point will be around 61F with an average humidity of 69%. Winds will be 3 mph from the W.