Great Sand Dunes National Park Weather Forecast

    • 46
    • 81

    Mostly Sunny

    • 47
    • 83

    Mostly Sunny

    • 47
    • 85

    Partly Sunny

    • 47
    • 86

    Slight Chance Thunderstorms

    • 48
    • 82

    Chance Thunderstorms

    • 49
    • 82

    Chance Thunderstorms

Today 26 Jun Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Sunny. Highs near 80. South Winds up to 10 Mph.

Tonight 26 Jun Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Mostly clear. Lows 42 to 50. South Winds around 10 Mph.

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Great Sand Dunes National Park Temperature Statistics

June Temperature

San Luis Valley Regional Airport (23 miles)

  • Lowest 6 June, 2025

    36.6 °F

  • Average June

    62.5 °F

  • Highest 16 June, 2025

    90.6 °F

Climate (2020–Present)

San Luis Valley Regional Airport (23 miles)

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  • Average Low 2020–2025

    26.3 °F

  • Average 2020–2025

    44.5 °F

  • Average High 2020–2025

    62.3 °F
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