Barth Lake Weather Forecast

    • 40
    • 49

    Chance Rain Showers

    • 36
    • 51

    Chance Rain Showers

    • 37
    • 57

    Partly Sunny

    • 48
    • 65

    Mostly Cloudy

    • 42
    • 58

    Chance Rain Showers

    • 43
    • 62

    Partly Sunny

Today 30 Nov Caldwell

Cloudy, breezy and much cooler with Highs in the upper 40s. North Winds 15 to 25 Mph with Gusts up to 35 Mph.

Tonight 30 Nov Caldwell

Cloudy. A chance of Showers after midnight. Lows around 40. North Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

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Barth Lake Temperature Statistics

November Temperature

San Marcos, San Marcos Municipal Airport (10.6 miles)

  • Lowest 11 November, 2025

    35.1 °F

  • Average November

    66.6 °F

  • Highest 7 November, 2025

    90 °F

Climate (2020–Present)

San Marcos, San Marcos Municipal Airport (10.6 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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