Pierce Lake Weather Forecast

    • 33
    • 61

    Sunny

    • 45
    • 66

    Sunny

    • 44
    • 75

    Mostly Sunny

    • 49
    • 75

    Mostly Sunny

    • 44
    • 71

    Partly Sunny

    • 45
    • 62

    Mostly Cloudy

Today 8 Dec Hays

Sunny. Highs around 60. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 8 Dec Hays

Clear. Lows in the mid 30s. East Winds around 5 Mph, becoming southwest after midnight.

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Pierce Lake Temperature Statistics

December Temperature

San Marcos, San Marcos Municipal Airport (20.5 miles)

  • Lowest 2 December, 2025

    30.9 °F

  • Average December

    48.5 °F

  • Highest 6 December, 2025

    78.1 °F

Climate (2020–Present)

San Marcos, San Marcos Municipal Airport (20.5 miles)

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  • Average Low 2020–2025

    59.4 °F

  • Average 2020–2025

    70.1 °F

  • Average High 2020–2025

    81.8 °F
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