Pierce Lake Weather Forecast

    • 73
    • 93

    Slight Chance Thunderstorms

    • 73
    • 95

    Decreasing Clouds

    • 73
    • 95

    Chance Thunderstorms

    • 73
    • 96

    Mostly Sunny

    • 73
    • 96

    Slight Chance Thunderstorms

    • 73
    • 95

    Slight Chance Thunderstorms

    • 73
    • 95

    Mostly Sunny

Today 4 Sep Hays

Mostly cloudy with a slight chance of Showers and Thunderstorms. Highs in the lower 90s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 4 Sep Hays

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Pierce Lake Temperature Statistics

September Temperature

San Marcos, San Marcos Municipal Airport (20.5 miles)

  • Lowest 1 September, 2026

    73.9 °F

  • Average September

    87.4 °F

  • Highest 2 September, 2026

    102.9 °F

Climate (2021–2026)

San Marcos, San Marcos Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    60.1 °F

  • Average 2021–2026

    70.9 °F

  • Average High 2021–2026

    82.6 °F
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