10-Day Weather Forecast - San Marcos, CA

Patchy fog in the morning. Partly cloudy. Highs 69 to 73 in the western valleys to 71 to 76 near the foothills. Light winds becoming southwest 10 mph in the afternoon.

Partly cloudy. Patchy fog overnight. Lows 44 to 51 in wind sheltered areas to 49 to 55 in warmer locations. Light winds.

Patchy fog in the morning. Partly cloudy. Highs 72 to 77. Light winds becoming west 10 mph in the afternoon.

Partly cloudy. Patchy fog overnight. Lows 48 to 54.

Patchy fog in the morning. Partly cloudy. Highs 72 to 77.

Partly cloudy in the evening. . . Becoming mostly cloudy. Lows 48 to 54.

Mostly cloudy in the morning then partly cloudy with a chance of rain in the afternoon. Highs 68 to 73.

Mostly cloudy. A chance of rain in the evening then rain likely overnight. Lows 51 to 56.

Rain. Rain may be heavy at times. Highs 63 to 68.

Rain. Rain may be heavy at times in the evening. Lows 52 to 57.

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

Cloudy with probable rain. Chance of precipitation 75%. Low temperature around 53F. Dew point will be around 54F with an average humidity of 98%. Winds will be 2 mph from the S.

Cloudy with probable rain. Chance of precipitation 65%. High temperature around 57F. Dew point will be around 54F with an average humidity of 97%. Winds will be 3 mph from the W.

Partly cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 49F. Dew point will be around 49F with an average humidity of 93%. Winds will be 2 mph from the NE.

Mostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 56F. Dew point will be around 50F with an average humidity of 83%. Winds will be 2 mph from the NW.

Clear. Low temperature around 49F. Dew point will be around 42F with an average humidity of 73%. Winds will be 5 mph from the NE.

Sunny. High temperature around 60F. Dew point will be around 46F with an average humidity of 66%. Winds will be 3 mph from the E.

Mostly clear. Low temperature around 49F. Dew point will be around 41F with an average humidity of 66%. Winds will be 4 mph from the E.