San Marcos Weather Forecast

    • 75
    • 96

    Chance Thunderstorms

    • 74
    • 89

    Chance Thunderstorms

    • 73
    • 91

    Chance Thunderstorms

    • 72
    • 90

    Chance Thunderstorms

    • 74
    • 91

    Chance Thunderstorms

    • 74
    • 93

    Slight Chance Thunderstorms

Today 1 Aug Hays

Sunny with a slight chance of Showers and Thunderstorms this Morning, then partly cloudy with a chance of Showers and Thunderstorms this afternoon. Highs in the mid 90s. South Winds 5 to 10 Mph. Gusts up to 25 Mph this afternoon. Chance of rain 50 percent. Highest heat index Readings up to 107 this afternoon.

Tonight 1 Aug Hays

Partly cloudy before Midnight, then becoming mostly cloudy. A chance of Showers and Thunderstorms. Lows in the mid 70s. South Winds 5 to 10 Mph, becoming northwest after midnight. Chance of rain 40 percent.

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San Marcos Temperature Statistics

August Temperature

San Marcos, San Marcos Municipal Airport (4.3 miles)

  • Lowest

  • Average August

  • Highest

Climate (2010–Present)

San Marcos, San Marcos Municipal Airport (4.3 miles)

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  • Average Low 2010–Present

    57.9 °F
  • Average 2010–Present

    68 °F
  • Average High 2010–Present

    80.4 °F
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