Cassin Lake Weather Forecast

    • 71
    • 95

    Decreasing Clouds

    • 70
    • 96

    Mostly Sunny

    • 73
    • 96

    Mostly Sunny

    • 74
    • 96

    Mostly Sunny

    • 73
    • 98

    Chance Rain Showers

    • 72
    • 94

    Chance Thunderstorms

Today 18 Sep Bexar

Mostly sunny this Morning, then becoming partly cloudy. Highs in the mid 90s. Southeast Winds 5 to 10 Mph.

Tonight 18 Sep Bexar

Partly cloudy. Lows around 70. Southeast Winds 5 to 10 Mph.

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Cassin Lake Temperature Statistics

September Temperature

San Antonio, Stinson Municipal Airport (2.5 miles)

  • Lowest 9 September, 2025

    68 °F

  • Average September

    83.2 °F

  • Highest 4 September, 2025

    102 °F

Climate (2020–Present)

San Antonio, Stinson Municipal Airport (2.5 miles)

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  • Average Low 2020–2025

    62.2 °F

  • Average 2020–2025

    72.8 °F

  • Average High 2020–2025

    84.4 °F
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