Dietz Lake Weather Forecast

    • 68
    • 93

    Becoming Sunny

    • 68
    • 94

    Mostly Sunny

    • 67
    • 94

    Partly Sunny

    • 68
    • 94

    Slight Chance Thunderstorms

    • 70
    • 93

    Slight Chance Thunderstorms

    • 69
    • 94

    Mostly Sunny

Today 15 Sep Guadalupe

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

Tonight 15 Sep Guadalupe

Mostly clear. Lows in the upper 60s. Southeast Winds 5 to 10 Mph, becoming southwest after midnight.

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Dietz Lake Temperature Statistics

September Temperature

New Braunfels Regional Airport (13 miles)

  • Lowest 9 September, 2025

    63 °F

  • Average September

    80.7 °F

  • Highest 4 September, 2025

    100.9 °F

Climate (2020–Present)

New Braunfels Regional Airport (13 miles)

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  • Average Low 2020–2025

    60.4 °F

  • Average 2020–2025

    71.4 °F

  • Average High 2020–2025

    83.5 °F
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