Great Sand Dunes National Park Weather Forecast

    • 50
    • 85

    Areas Smoke

    • 49
    • 88

    Slight Chance Thunderstorms

    • 48
    • 87

    Chance Thunderstorms

    • 50
    • 84

    Chance Thunderstorms

    • 48
    • 87

    Slight Chance Thunderstorms

    • 49
    • 86

    Mostly Sunny

    • 52
    • 92

    Mostly Sunny

Today 5 Jul Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Sunny. Patchy smoke. Highs in the lower to mid 80s. South Winds up to 10 Mph.

Tonight 5 Jul Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Partly cloudy. Lows 45 to 53. South Winds 10 to 15 Mph.

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Great Sand Dunes National Park Temperature Statistics

July Temperature

San Luis Valley Regional Airport (23 miles)

  • Lowest 3 July, 2026

    35.1 °F

  • Average July

    61 °F

  • Highest 3 July, 2026

    84.9 °F

Climate (2021–2026)

San Luis Valley Regional Airport (23 miles)

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  • Average Low 2021–2026

    26.7 °F

  • Average 2021–2026

    45.1 °F

  • Average High 2021–2026

    63.3 °F
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