Carter Lake Weather Forecast

    • 59
    • 92

    Sunny

    • 63
    • 89

    Mostly Sunny

    • 67
    • 91

    Partly Sunny

    • 65
    • 94

    Mostly Sunny

    • 58
    • 90

    Mostly Sunny

    • 66
    • 94

    Mostly Sunny

    • 64
    • 93

    Mostly Sunny

Today 15 Oct Guadalupe

Sunny. Highs in the lower 90s. Northeast Winds around 5 Mph.

Tonight 15 Oct Guadalupe

Clear. Lows in the lower 60s. East Winds around 5 Mph.

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Carter Lake Temperature Statistics

October Temperature

San Marcos, San Marcos Municipal Airport (18 miles)

  • Lowest 13 October, 2025

    59 °F

  • Average October

    79.5 °F

  • Highest 1 October, 2025

    96.1 °F

Climate (2020–Present)

San Marcos, San Marcos Municipal Airport (18 miles)

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  • Average Low 2020–2025

    59.3 °F

  • Average 2020–2025

    70 °F

  • Average High 2020–2025

    81.7 °F
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