Great Sand Dunes National Park Weather Forecast

    • 42
    • 70

    Mostly Sunny

    • 45
    • 71

    Mostly Sunny

    • 44
    • 71

    Slight Chance Thunderstorms

    • 43
    • 69

    Mostly Sunny

    • 43
    • 68

    Sunny

Today 4 Oct Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Sunny. Highs near 70. Light Winds.

Tonight 4 Oct Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Mostly clear. Lows 38 to 43. Light Winds.

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Great Sand Dunes National Park Temperature Statistics

October Temperature

San Luis Valley Regional Airport (23 miles)

  • Lowest 1 October, 2026

    39.9 °F

  • Average October

    50.9 °F

  • Highest 1 October, 2026

    61 °F

Climate (2021–2026)

San Luis Valley Regional Airport (23 miles)

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  • Average Low 2021–2026

    26.8 °F

  • Average 2021–2026

    45.2 °F

  • Average High 2021–2026

    63.4 °F
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