San Marcos Weather Forecast

    • 76
    • 95

    Decreasing Clouds

    • 75
    • 96

    Partly Sunny

    • 75
    • 95

    Mostly Sunny

    • 75
    • 96

    Mostly Sunny

    • 75
    • 97

    Hot

    • 76
    • 95

    Partly Sunny

    • 76
    • 93

    Slight Chance Thunderstorms

Today 5 Jul Hays

Partly cloudy. Near steady temperature in the mid 90s. South Winds around 5 Mph.

Tonight 5 Jul Hays

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 70s. South Winds 5 to 10 Mph, becoming southwest after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Marcos Temperature Statistics

July Temperature

San Marcos, San Marcos Municipal Airport (4.3 miles)

  • Lowest 2 July, 2026

    73.9 °F

  • Average July

    84.9 °F

  • Highest 3 July, 2026

    97 °F

Climate (2021–2026)

San Marcos, San Marcos Municipal Airport (4.3 miles)

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  • Average Low 2021–2026

    60 °F

  • Average 2021–2026

    70.8 °F

  • Average High 2021–2026

    82.4 °F
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