Great Sand Dunes National Park Weather Forecast

    • 4
    • 26

    Mostly Sunny

    • 4
    • 35

    Partly Sunny

    • 8
    • 39

    Partly Sunny

    • 6
    • 37

    Mostly Sunny

    • 12
    • 39

    Partly Sunny

    • 11
    • 43

    Mostly Sunny

Today 10 Dec Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Sunny. Highs in the mid to upper 20s. Northwest Winds 10 to 15 Mph.

Tonight 10 Dec Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Mostly clear. Lows 6 below to 2 above zero. West Winds up to 10 Mph.

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Great Sand Dunes National Park Temperature Statistics

December Temperature

San Luis Valley Regional Airport (23 miles)

  • Lowest 1 December, 2024

    5.8 °F

  • Average December

    26.2 °F

  • Highest 4 December, 2024

    51.7 °F

Climate (2019–Present)

San Luis Valley Regional Airport (23 miles)

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  • Average Low 2019–2024

    26.4 °F

  • Average 2019–2024

    44.4 °F

  • Average High 2019–2024

    62.1 °F
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