Rattlesnake Lake Weather Forecast

    • 75
    • 90

    Increasing Clouds

    • 77
    • 90

    Slight Chance Thunderstorms

    • 77
    • 91

    Slight Chance Thunderstorms

    • 74
    • 90

    Rain Showers Likely

    • 71
    • 84

    Rain Showers Likely

    • 70
    • 82

    Rain Showers Likely

Today 16 May Hays

Partly cloudy. Highs in the upper 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 16 May Hays

Mostly cloudy. Near steady temperature around 70. South Winds around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rattlesnake Lake Temperature Statistics

May Temperature

San Marcos, San Marcos Municipal Airport (16.2 miles)

  • Lowest 2 May, 2026

    50 °F

  • Average May

    70.9 °F

  • Highest 13 May, 2026

    90 °F

Climate (2021–Present)

San Marcos, San Marcos Municipal Airport (16.2 miles)

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  • Average Low 2021–2026

    60 °F

  • Average 2021–2026

    70.7 °F

  • Average High 2021–2026

    82.3 °F
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