Carter Lake Weather Forecast

    • 74
    • 96

    Decreasing Clouds

    • 75
    • 97

    Hot

    • 75
    • 98

    Hot

    • 75
    • 99

    Hot

    • 76
    • 100

    Hot

    • 77
    • 100

    Hot

Today 25 Jul Guadalupe

Partly cloudy. Highs in the mid 90s. South Winds 5 to 10 Mph.

Tonight 25 Jul Guadalupe

Partly cloudy. Lows in the mid 70s. South Winds 5 to 10 Mph.

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Carter Lake Temperature Statistics

July Temperature

San Marcos, San Marcos Municipal Airport (18 miles)

  • Lowest 10 July, 2026

    70 °F

  • Average July

    83.6 °F

  • Highest 22 July, 2026

    102 °F

Climate (2021–2026)

San Marcos, San Marcos Municipal Airport (18 miles)

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  • Average Low 2021–2026

    60.1 °F

  • Average 2021–2026

    70.8 °F

  • Average High 2021–2026

    82.4 °F
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