Rattlesnake Lake Weather Forecast

    • 73
    • 98

    Hot

    • 74
    • 98

    Hot

    • 75
    • 98

    Hot

    • 75
    • 98

    Hot

    • 75
    • 99

    Hot

    • 75
    • 100

    Hot

Today 15 Aug Hays

Partly cloudy this Morning, then clearing. Highs in the upper 90s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Highest heat index Readings up to 105.

Tonight 15 Aug Hays

Clear in the Evening, then becoming partly cloudy. Lows in the lower 70s. South Winds 5 to 10 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rattlesnake Lake Temperature Statistics

August Temperature

San Marcos, San Marcos Municipal Airport (16.2 miles)

  • Lowest 3 August, 2026

    70 °F

  • Average August

    86.2 °F

  • Highest 13 August, 2026

    100.9 °F

Climate (2021–2026)

San Marcos, San Marcos Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    60.1 °F

  • Average 2021–2026

    70.9 °F

  • Average High 2021–2026

    82.5 °F
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