Post Lake Weather Forecast

    • 53
    • 76

    Slight Chance Thunderstorms

    • 56
    • 80

    Chance Thunderstorms

    • 58
    • 84

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

    • 55
    • 85

    Mostly Sunny

    • 55
    • 83

    Mostly Sunny

Today 18 Sep Guadalupe County

Partly cloudy. Isolated Showers and Thunderstorms this afternoon. Highs in the mid 70s. Chance of rain 20 percent.

Tonight 18 Sep Guadalupe County

Partly cloudy. Isolated Showers and Thunderstorms in the evening. Lows in the lower 50s. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

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Post Lake Temperature Statistics

September Temperature

Clines Corners (56.5 miles)

  • Lowest 14 September, 2025

    44.1 °F

  • Average September

    62.6 °F

  • Highest 3 September, 2025

    82 °F

Climate (2020–Present)

Clines Corners (56.5 miles)

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  • Average Low 2020–2025

    37.6 °F

  • Average 2020–2025

    50.3 °F

  • Average High 2020–2025

    63.8 °F
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