Great Sand Dunes National Park Weather Forecast

    • 29
    • 53

    Chance Rain Showers

    • 30
    • 59

    Mostly Sunny

    • 33
    • 60

    Partly Sunny

    • 28
    • 58

    Mostly Sunny

    • 28
    • 57

    Mostly Sunny

    • 29
    • 58

    Mostly Sunny

Today 24 Oct Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Mostly cloudy with a 20 percent chance of Thunderstorms. Highs in the lower 50s. North Winds around 10 Mph.

Tonight 24 Oct Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Partly cloudy after midnight then becoming mostly cloudy. Near steady temperature near 30. Northwest Winds up to 10 Mph. Chance of precipitation 20 percent.

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Great Sand Dunes National Park Temperature Statistics

October Temperature

San Luis Valley Regional Airport (23 miles)

  • Lowest 19 October, 2025

    21 °F

  • Average October

    51 °F

  • Highest 3 October, 2025

    77 °F

Climate (2020–Present)

San Luis Valley Regional Airport (23 miles)

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  • Average Low 2020–2025

    26.5 °F

  • Average 2020–2025

    44.5 °F

  • Average High 2020–2025

    62.3 °F
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