10-Day Weather Forecast - Lake San Marcos, CA

Partly cloudy with patchy fog in the morning. . . Becoming sunny. Highs 81 to 86 in the western valleys to 93 to 98 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 60 to 65. Areas of winds west to 10 mph in the evening becoming light.

Partly cloudy with patchy fog in the morning. . . Becoming mostly sunny. Highs 82 to 87 in the western valleys to 94 to 99 near the foothills. Light winds becoming southwest 10 mph in the afternoon.

Mostly clear in the evening. . . Becoming partly cloudy. Lows 59 to 64. Areas of winds southwest to 10 mph in the evening becoming light.

Partly cloudy in the morning. . . Becoming mostly sunny. Highs 80 to 85 in the western valleys to 90 to 95 near the foothills.

Clear in the evening. . . Becoming partly cloudy. Lows 59 to 64.

Partly cloudy. Highs 79 to 84 in the western valleys to 87 to 92 near the foothills.

Partly cloudy. Lows 60 to 65.

Partly cloudy. Highs 80 to 85 in the western valleys to 87 to 92 near the foothills.

Partly cloudy. A slight chance of showers overnight. Lows 62 to 67.

Partly cloudy with a slight chance of showers. Highs 82 to 87 in the western valleys to 88 to 93 near the foothills.

Mostly clear in the evening. . . Becoming partly cloudy. Lows 64 to 69.

Partly cloudy in the morning then mostly sunny with a slight chance of showers in the afternoon. Highs 84 to 89 in the western valleys to 90 to 95 near the foothills.

Clear. Low temperature around 72F. Dew point will be around 66F with an average humidity of 76%. Winds will be 3 mph from the W.

Sunny. High temperature around 87F. Dew point will be around 69F with an average humidity of 64%. Winds will be 5 mph from the W.

Clear. Low temperature around 73F. Dew point will be around 66F with an average humidity of 74%. Winds will be 3 mph from the W.

Sunny. High temperature around 87F. Dew point will be around 69F with an average humidity of 65%. Winds will be 6 mph from the SW.

Clear. Low temperature around 73F. Dew point will be around 67F with an average humidity of 74%. Winds will be 3 mph from the W.