Rattlesnake Lake Weather Forecast

    • 34
    • 67

    Sunny

    • 44
    • 65

    Sunny

    • 38
    • 70

    Mostly Sunny

    • 33
    • 58

    Mostly Sunny

    • 39
    • 62

    Mostly Sunny

    • 41
    • 64

    Mostly Cloudy

Today 14 Jan Hays

Sunny, breezy with Highs in the upper 60s. North Winds 15 to 25 Mph with Gusts up to 35 Mph.

Tonight 14 Jan Hays

Clear. Lows in the mid 30s. North Winds 10 to 15 Mph. Gusts up to 30 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rattlesnake Lake Temperature Statistics

January Temperature

San Marcos, San Marcos Municipal Airport (16.2 miles)

  • Lowest 1 January, 2026

    37 °F

  • Average January

    61.2 °F

  • Highest 2 January, 2026

    89.1 °F

Climate (2021–Present)

San Marcos, San Marcos Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    59.6 °F

  • Average 2021–2026

    70.3 °F

  • Average High 2021–2026

    82 °F
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