Alamo Weather Forecast

    • 64
    • 85

    Increasing Clouds

    • 65
    • 88

    Partly Sunny

    • 67
    • 90

    Mostly Cloudy

    • 66
    • 92

    Chance Thunderstorms

    • 67
    • 87

    Slight Chance Thunderstorms

    • 67
    • 89

    Slight Chance Thunderstorms

Today 29 Mar Hays

Mostly sunny. Not as cool with Highs in the lower 80s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 29 Mar Hays

Clear in the Evening, then becoming mostly cloudy. Not as cool with Lows around 60. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alamo Temperature Statistics

March Temperature

San Marcos, San Marcos Municipal Airport (5 miles)

  • Lowest 13 March, 2026

    37.9 °F

  • Average March

    70.1 °F

  • Highest 15 March, 2026

    98.1 °F

Climate (2021–Present)

San Marcos, San Marcos Municipal Airport (5 miles)

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  • Average Low 2021–2026

    59.9 °F

  • Average 2021–2026

    70.6 °F

  • Average High 2021–2026

    82.3 °F
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