San Marcos, Texas | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Cloudy
    70°
    Sunday 5/12
    Forecast night icon
    70°
    Cloudy
    Hourly
    Night Details
    Cloudy. Patchy fog. Lows in the lower 70s. East winds 5 to 10 mph becoming southeast after midnight.
  • Forecast day icon
    Monday
    40% Chance of Storms
    81°
    Forecast night icon
    Night
    Mostly Clear
    69°
    Monday 5/13
    Day
    81°
    40% Chance of Storms
    Forecast day icon
    Night
    69°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. A chance of showers. A chance of thunderstorms. Some thunderstorms may be severe in the afternoon. Highs in the mid 80s. Southwest winds 5 to 10 mph. Chance of rain 40 percent.
    Night Details
    Mostly clear. Lows in the lower 60s. North winds 5 to 10 mph.
  • Forecast day icon
    Tuesday
    Sunny
    87°
    Forecast night icon
    Night
    Partly Cloudy
    68°
    Tuesday 5/14
    Day
    87°
    Sunny
    Forecast day icon
    Night
    68°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 80s. Northwest winds around 5 mph becoming east in the afternoon.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. Lows in the mid 60s. Southeast winds 5 to 10 mph becoming south after midnight.
  • Forecast day icon
    Wednesday
    Partly Cloudy
    89°
    Forecast night icon
    Night
    50% Chance of Storms
    71°
    Wednesday 5/15
    Day
    89°
    Partly Cloudy
    Forecast day icon
    Night
    71°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy in the morning then becoming mostly cloudy. Highs in the upper 80s.
    Night Details
    Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 50 percent.
  • Forecast day icon
    Thursday
    70% Chance of Storms
    80°
    Forecast night icon
    Night
    30% Chance of Storms
    73°
    Thursday 5/16
    Day
    80°
    70% Chance of Storms
    Forecast day icon
    Night
    73°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. Showers likely with a chance of thunderstorms in the morning then showers and thunderstorms likely in the afternoon. Highs around 80. Chance of rain 70 percent.
    Night Details
    Mostly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 60s. Chance of rain 30 percent.
  • Forecast day icon
    Friday
    Partly Cloudy
    81°
    Forecast night icon
    Night
    Chance of Storms
    70°
    Friday 5/17
    Day
    81°
    Partly Cloudy
    Forecast day icon
    Night
    70°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. Highs in the mid 80s.
    Night Details
    Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s.
  • Forecast day icon
    Saturday
    Chance of Storms
    85°
    Forecast night icon
    Night
    Chance of Storms
    72°
    Saturday 5/18
    Day
    85°
    Chance of Storms
    Forecast day icon
    Night
    72°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s.
    Night Details
    Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s.
  • Forecast day icon
    Sunday
    Partly Cloudy
    91°
    Forecast night icon
    Night
    Clear
    72°
    Sunday 5/19
    Day
    91°
    Partly Cloudy
    Forecast day icon
    Night
    72°
    Clear
    Forecast night icon
    Day Details
    Partly cloudy in the morning then clearing. Highs around 90.
    Night Details
    Clear. Low temperature around 72F. Dew point will be around 72F with an average humidity of 82%. Winds will be 5 mph from the SE.
  • Forecast day icon
    Monday
    Sunny
    89°
    Forecast night icon
    Night
    Clear
    70°
    Monday 5/20
    Day
    89°
    Sunny
    Forecast day icon
    Night
    70°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 89F. Dew point will be around 72F with an average humidity of 74%. Winds will be 4 mph from the SE.
    Night Details
    Clear. Low temperature around 70F. Dew point will be around 71F with an average humidity of 80%. Winds will be 4 mph from the SE.
  • Forecast day icon
    Tuesday
    Partly Cloudy
    88°
    Forecast night icon
    Night
    Clear
    70°
    Tuesday 5/21
    Day
    88°
    Partly Cloudy
    Forecast day icon
    Night
    70°
    Clear
    Forecast night icon
    Day Details
    Partly cloudy with widely scattered thunderstorms. Chance of storms 30%. High temperature around 88F. Dew point will be around 71F with an average humidity of 72%. Winds will be 6 mph from the S.
    Night Details
    Clear. Low temperature around 70F. Dew point will be around 70F with an average humidity of 80%. Winds will be 6 mph from the SE.