Hills of Hays Weather Forecast

    • 75
    • 98

    Hot

    • 74
    • 97

    Hot

    • 75
    • 97

    Slight Chance Thunderstorms

    • 75
    • 97

    Hot

    • 74
    • 97

    Hot

    • 73
    • 95

    Partly Sunny

    • 73
    • 96

    Partly Sunny

Today 20 Sep Hays

Partly cloudy. Highs in the upper 90s. South Winds around 5 Mph.

Tonight 20 Sep Hays

Mostly cloudy with a slight chance of Showers and Thunderstorms this Evening, then partly cloudy after midnight. Lows in the lower 70s. South Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hills of Hays Temperature Statistics

September Temperature

San Marcos, San Marcos Municipal Airport (5 miles)

  • Lowest 8 September, 2026

    72 °F

  • Average September

    85.8 °F

  • Highest 2 September, 2026

    102.9 °F

Climate (2021–2026)

San Marcos, San Marcos Municipal Airport (5 miles)

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  • Average Low 2021–2026

    60.2 °F

  • Average 2021–2026

    71 °F

  • Average High 2021–2026

    82.6 °F
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