San Marcos, California | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Partly Cloudy
    56°
    Monday 5/13
    Forecast night icon
    56°
    Partly Cloudy
    Hourly
    Night Details
    Partly cloudy. Patchy fog overnight. Lows 46 to 54. Areas of winds west to 10 mph this evening becoming light.
  • Forecast day icon
    Tuesday
    Partly Cloudy
    68°
    Forecast night icon
    Night
    Partly Cloudy
    58°
    Tuesday 5/14
    Day
    68°
    Partly Cloudy
    Forecast day icon
    Night
    58°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy in the morning. . . Becoming mostly sunny. Highs 71 to 74 in the western valleys to 72 to 77 near the foothills. Areas of winds west to 10 mph. . . Becoming 10 to 15 mph in the afternoon.
    Night Details
    Mostly clear in the evening. . . Becoming partly cloudy overnight with patchy fog. Lows 44 to 54. Areas of winds west to 10 mph in the evening becoming light.
  • Forecast day icon
    Wednesday
    Partly Cloudy
    65°
    Forecast night icon
    Night
    Partly Cloudy
    58°
    Wednesday 5/15
    Day
    65°
    Partly Cloudy
    Forecast day icon
    Night
    58°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with patchy fog in the morning. . . Becoming mostly sunny. Highs 70 to 75. Areas of winds west to 10 mph. . . Becoming 10 to 15 mph in the afternoon.
    Night Details
    Partly cloudy in the evening. . . Becoming mostly cloudy. Patchy fog. Lows 44 to 54. Areas of winds west 10 mph in the evening becoming light.
  • Forecast day icon
    Thursday
    Partly Cloudy
    68°
    Forecast night icon
    Night
    Partly Cloudy
    58°
    Thursday 5/16
    Day
    68°
    Partly Cloudy
    Forecast day icon
    Night
    58°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Patchy fog in the morning. Partly cloudy. Highs 71 to 76.
    Night Details
    Partly cloudy. Patchy fog overnight. Lows 46 to 56.
  • Forecast day icon
    Friday
    Partly Cloudy
    69°
    Forecast night icon
    Night
    Partly Cloudy
    57°
    Friday 5/17
    Day
    69°
    Partly Cloudy
    Forecast day icon
    Night
    57°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Patchy fog in the morning. Partly cloudy. Highs 71 to 74 in the western valleys to 74 to 79 near the foothills.
    Night Details
    Partly cloudy. Patchy fog overnight. Lows 46 to 55.
  • Forecast day icon
    Saturday
    Partly Cloudy
    70°
    Forecast night icon
    Night
    Mostly Cloudy
    56°
    Saturday 5/18
    Day
    70°
    Partly Cloudy
    Forecast day icon
    Night
    56°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with patchy fog in the morning. . . Becoming mostly sunny. Highs around 72 in the western valleys to 73 to 78 near the foothills.
    Night Details
    Mostly clear in the evening. . . Becoming mostly cloudy overnight with patchy fog. Lows 45 to 54.
  • Forecast day icon
    Sunday
    Partly Cloudy
    69°
    Forecast night icon
    Night
    Partly Cloudy
    57°
    Sunday 5/19
    Day
    69°
    Partly Cloudy
    Forecast day icon
    Night
    57°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with patchy fog in the morning. . . Becoming partly cloudy. Highs 70 to 73 in the western valleys to 72 to 77 near the foothills.
    Night Details
    Partly cloudy in the evening. . . Becoming cloudy overnight with patchy fog. Lows 44 to 53.
  • Forecast day icon
    Monday
    Partly Cloudy
    68°
    Forecast night icon
    Night
    Mostly Clear
    56°
    Monday 5/20
    Day
    68°
    Partly Cloudy
    Forecast day icon
    Night
    56°
    Mostly Clear
    Forecast night icon
    Day Details
    Mostly cloudy with patchy fog in the morning. . . Becoming partly cloudy. Highs 71 to 76.
    Night Details
    Mostly clear. Low temperature around 56F. Dew point will be around 52F with an average humidity of 80%. Winds will be 4 mph from the W.
  • Forecast day icon
    Tuesday
    Mostly Cloudy
    67°
    Forecast night icon
    Night
    Clear
    56°
    Tuesday 5/21
    Day
    67°
    Mostly Cloudy
    Forecast day icon
    Night
    56°
    Clear
    Forecast night icon
    Day Details
    Mostly cloudy. High temperature around 67F. Dew point will be around 54F with an average humidity of 70%. Winds will be 6 mph from the W.
    Night Details
    Clear. Low temperature around 56F. Dew point will be around 53F with an average humidity of 78%. Winds will be 4 mph from the W.
  • Forecast day icon
    Wednesday
    Sunny
    69°
    Forecast night icon
    Night
    Clear
    57°
    Wednesday 5/22
    Day
    69°
    Sunny
    Forecast day icon
    Night
    57°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 69F. Dew point will be around 55F with an average humidity of 67%. Winds will be 7 mph from the SW.
    Night Details
    Clear. Low temperature around 57F. Dew point will be around 53F with an average humidity of 77%. Winds will be 5 mph from the SW.