Great Sand Dunes National Park Weather Forecast

    • 15
    • 41

    Snow Showers

    • 1
    • 27

    Snow Showers

    • -6
    • 22

    Slight Chance Snow Showers

    • 4
    • 30

    Mostly Sunny

    • 5
    • 35

    Mostly Sunny

    • 10
    • 38

    Partly Sunny

    • 13
    • 40

    Mostly Cloudy

Today 23 Jan Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Mostly cloudy with a 40 percent chance of snow Showers. Highs 39 to 44. South Winds up to 10 Mph increasing to 10 to 15 Mph in the afternoon.

Tonight 23 Jan Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Periods of snow Showers. Snow accumulation up to 1 inch. Lows in the teens. South Winds 10 to 15 Mph. Chance of precipitation 80 percent.

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Great Sand Dunes National Park Temperature Statistics

January Temperature

San Luis Valley Regional Airport (23 miles)

  • Lowest 10 January, 2026

    -11.9 °F

  • Average January

    25.4 °F

  • Highest 4 January, 2026

    57 °F

Climate (2021–Present)

San Luis Valley Regional Airport (23 miles)

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  • Average Low 2021–2026

    26.8 °F

  • Average 2021–2026

    44.8 °F

  • Average High 2021–2026

    62.7 °F
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