San Marcos, Texas | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Monday
    Partly Cloudy
    91°
    Forecast night icon
    Night
    Partly Cloudy
    73°
    Monday 5/20
    Day
    91°
    Partly Cloudy
    Forecast day icon
    Night
    73°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy this morning then clearing. Highs in the lower 90s. South winds 5 to 10 mph with gusts up to 20 mph.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 70s. South winds around 10 mph with gusts up to 25 mph.
  • Forecast day icon
    Tuesday
    Partly Cloudy
    91°
    Forecast night icon
    Night
    Mostly Cloudy
    74°
    Tuesday 5/21
    Day
    91°
    Partly Cloudy
    Forecast day icon
    Night
    74°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming partly cloudy. Highs in the lower 90s. South winds 10 to 15 mph with gusts up to 25 mph.
    Night Details
    Mostly cloudy. Lows in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph.
  • Forecast day icon
    Wednesday
    Partly Cloudy
    92°
    Forecast night icon
    Night
    Chance of Storms
    74°
    Wednesday 5/22
    Day
    92°
    Partly Cloudy
    Forecast day icon
    Night
    74°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Cloudy in the morning then becoming partly cloudy. Highs in the lower 90s. South winds 10 to 15 mph with gusts up to 25 mph.
    Night Details
    Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the lower 90s.
  • Forecast day icon
    Thursday
    Chance of Storms
    92°
    Forecast night icon
    Night
    Partly Cloudy
    74°
    Thursday 5/23
    Day
    92°
    Chance of Storms
    Forecast day icon
    Night
    74°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the lower 90s.
    Night Details
    Partly cloudy. Lows in the lower 70s. Highs in the upper 90s. Highest heat index readings up to 110.
  • Forecast day icon
    Friday
    Partly Cloudy
    95°
    Forecast night icon
    Night
    Partly Cloudy
    74°
    Friday 5/24
    Day
    95°
    Partly Cloudy
    Forecast day icon
    Night
    74°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. Lows in the lower 70s. Highs in the upper 90s. Highest heat index readings up to 110.
    Night Details
    Partly cloudy. Lows in the lower 70s. Highs in the upper 90s. Highest heat index readings up to 110.
  • Forecast day icon
    Saturday
    Partly Cloudy
    96°
    Forecast night icon
    Night
    Partly Cloudy
    75°
    Saturday 5/25
    Day
    96°
    Partly Cloudy
    Forecast day icon
    Night
    75°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. Lows in the lower 70s. Highs in the upper 90s. Highest heat index readings up to 110.
    Night Details
    Partly cloudy. Lows in the lower 70s. Highs in the upper 90s. Highest heat index readings up to 110.
  • Forecast day icon
    Sunday
    Partly Cloudy
    96°
    Forecast night icon
    Night
    Partly Cloudy
    74°
    Sunday 5/26
    Day
    96°
    Partly Cloudy
    Forecast day icon
    Night
    74°
    Partly Cloudy
    Forecast night icon
    Day Details
    Partly cloudy. Lows in the lower 70s. Highs in the upper 90s. Highest heat index readings up to 110.
    Night Details
    Partly cloudy with scattered thunderstorms. Chance of storms 35%. Low temperature around 74F. Dew point will be around 73F with an average humidity of 79%. Winds will be 12 mph from the S.
  • Forecast day icon
    Monday
    Partly Cloudy
    94°
    Forecast night icon
    Night
    40% Chance of Rain
    71°
    Monday 5/27
    Day
    94°
    Partly Cloudy
    Forecast day icon
    Night
    71°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with widely scattered thunderstorms. Chance of storms 30%. High temperature around 94F. Dew point will be around 73F with an average humidity of 67%. Winds will be 8 mph from the S.
    Night Details
    Mostly clear with a 35% chance for rain and thunderstorms. Low temperature around 71F. Dew point will be around 71F with an average humidity of 75%. Winds will be 6 mph from the SE.
  • Forecast day icon
    Tuesday
    30% Chance of Rain
    88°
    Forecast night icon
    Night
    50% Chance of Rain
    69°
    Tuesday 5/28
    Day
    88°
    30% Chance of Rain
    Forecast day icon
    Night
    69°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a 40% chance for rain and thunderstorms. High temperature around 88F. Dew point will be around 69F with an average humidity of 66%. Winds will be 6 mph from the E.
    Night Details
    Mostly clear with a 45% chance for rain and thunderstorms. Low temperature around 69F. Dew point will be around 67F with an average humidity of 74%. Winds will be 5 mph from the E.
  • Forecast day icon
    Wednesday
    40% Chance of Rain
    85°
    Forecast night icon
    Night
    40% Chance of Rain
    67°
    Wednesday 5/29
    Day
    85°
    40% Chance of Rain
    Forecast day icon
    Night
    67°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a 35% chance for rain and thunderstorms. High temperature around 85F. Dew point will be around 67F with an average humidity of 67%. Winds will be 6 mph from the E.
    Night Details
    Clear with a chance of rain. Chance of precipitation 35%. Low temperature around 67F. Dew point will be around 66F with an average humidity of 73%. Winds will be 6 mph from the E.