10-Day Weather Forecast - San Marcos, CA

Mostly sunny. Highs 74 to 79. Light winds becoming west to 10 mph in the afternoon.

Mostly clear in the evening. . . Becoming partly cloudy. Lows 43 to 51 in wind sheltered areas to 49 to 56 in warmer locations. Light winds.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 70 to 74 in the western valleys to 72 to 77 near the foothills. Light winds becoming southwest 10 mph in the afternoon.

Partly cloudy. Lows 45 to 52 in wind sheltered areas to 50 to 56 in warmer locations. Light winds.

Partly cloudy. Highs 73 to 78.

Partly cloudy. Lows 48 to 54.

Partly cloudy. Highs 70 to 74 in the western valleys to 72 to 77 near the foothills.

Clear. Lows 49 to 54.

Mostly sunny in the morning then partly cloudy with a chance of showers in the afternoon. Highs 67 to 72.

Partly cloudy with a chance of showers in the evening then mostly cloudy with showers likely overnight. Lows 51 to 56.

Showers. Locally heavy rainfall possible. Highs 65 to 69 in the western valleys to 61 to 66 near the foothills.

Showers. Lows 51 to 56.

Showers likely. Highs 65 to 69 in the western valleys to 61 to 66 near the foothills.

Cloudy with a chance of rain. Chance of precipitation 55%. Low temperature around 47F. Dew point will be around 49F with an average humidity of 97%. Winds will be 3 mph from the S.

Cloudy with a chance of rain. Chance of precipitation 50%. High temperature around 57F. Dew point will be around 51F with an average humidity of 87%. Winds will be 3 mph from the SW.

Partly cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 44F. Dew point will be around 45F with an average humidity of 93%. Winds will be 2 mph from the SW.

Sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 56F. Dew point will be around 46F with an average humidity of 76%. Winds will be 1 mph from the N.

Clear. Low temperature around 43F. Dew point will be around 39F with an average humidity of 74%. Winds will be 4 mph from the NE.