Great Sand Dunes National Park
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Great Sand Dunes National Park Weather in September

September in Great Sand Dunes National Park brings pleasant temperatures, with daytime highs of 22°C (72°F) and nights around 6°C (43°F). The excellent weather makes it a solid choice for a visit.

Rainfall in Great Sand Dunes National Park in September

Climate statistics over the past 30 years suggest around 10 days of rain, with 32 mm (1.3 in) average for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Great Sand Dunes National Park in September

Weather in Great Sand Dunes National Park is at its excellent in September. Highs reach 22°C (72°F), while nights settle around 6°C (43°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 6°C (43°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Great Sand Dunes National Park.

Great Sand Dunes National Park Temperature in September

Min Temperature
6°C (43°F)
Max Temperature
22°C (72°F)
Chance of Rain
34%
Precipitation
32 mm (1.3 in)
Rainy days
10 days

Great Sand Dunes National Park Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Great Sand Dunes National Park - and find the best time to visit.

Best Places in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Great Sand Dunes National Park in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Pack a light rain jacket or compact umbrella for occasional showers.

What To Do in Great Sand Dunes National Park in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Cycling
    10/10
  • Walking
    10/10
  • Camping
    5/10
  • Outdoor sports
    10/10

Great Sand Dunes National Park 3-Day Forecast

More climate data for Great Sand Dunes National Park

Popular in September

Where to go in September - average daytime high across popular destinations.

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