Great Sand Dunes National Park Weather Forecast

    • 45
    • 72

    Slight Chance Thunderstorms

    • 41
    • 66

    Chance Thunderstorms

    • 36
    • 62

    Partly Sunny

    • 35
    • 63

    Slight Chance Thunderstorms

    • 38
    • 63

    Slight Chance Thunderstorms

    • 39
    • 64

    Slight Chance Thunderstorms

    • 38
    • 63

    Slight Chance Thunderstorms

Today 22 Sep Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Southwest Winds 10 to 20 Mph increasing to 20 to 30 Mph in the afternoon. Gusts up to 45 Mph. Mostly sunny with a 10 percent chance of Thunderstorms. Highs 67 to 73.

Tonight 22 Sep Alamosa Vicinity/Central San Luis Valley Below 8500 Ft

Mostly cloudy with a 20 percent chance of Thunderstorms. Lows 40 to 47. South Winds 10 to 15 Mph with Gusts to around 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Sand Dunes National Park Temperature Statistics

September Temperature

San Luis Valley Regional Airport (23 miles)

  • Lowest 18 September, 2017

    32 °F
  • Average September

    59.2 °F
  • Highest 3 September, 2017

    84.9 °F

Climate (2010–Present)

San Luis Valley Regional Airport (23 miles)

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  • Average Low 2010–Present

    27.9 °F
  • Average 2010–Present

    45.1 °F
  • Average High 2010–Present

    60.9 °F
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