San Marcos Weather Forecast

    • 48
    • 68

    Decreasing Clouds

    • 63
    • 69

    Chance Thunderstorms

    • 59
    • 81

    Thunderstorms Likely

    • 54
    • 84

    Sunny

    • 60
    • 87

    Mostly Sunny

    • 66
    • 88

    Mostly Cloudy

Today 21 Apr Hays

Cooler. Mostly cloudy in the morning then clearing. Highs in the mid 60s. Northeast Winds 10 to 15 Mph. Gusts up to 30 Mph in the morning.

Tonight 21 Apr Hays

Mostly clear. Lows in the upper 40s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Marcos Temperature Statistics

April Temperature

San Marcos, San Marcos Municipal Airport (4.3 miles)

  • Lowest 2 April, 2021

    43 °F
  • Average April

    66.6 °F
  • Highest 9 April, 2021

    91.9 °F

Climate (2010–Present)

San Marcos, San Marcos Municipal Airport (4.3 miles)

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  • Average Low 2010–Present

    56.9 °F
  • Average 2010–Present

    67.3 °F
  • Average High 2010–Present

    79.8 °F
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