September weather forecast
White Sands National Monument, NM

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The stunning landscape of the White Sands National Monument in New Mexico
The stunning landscape of the White Sands National Monument in New Mexico

Weather in September

September brings the fall season, with a notable decrease in temperatures, indicating a respite from the intense summer heat. Daylight hours reduce significantly as part of autumn's arrival. Rainfall registers a downward shift from August, signaling the onset of drier conditions. As temperatures drop, a comfortable high of 89°F (31.7°C) is recorded. Autumn's advent paints the dunes with a cooler palette, with the shifting light dynamics transforming the landscape.

Temperature

The transition into September in White Sands National Monument subtly indicates a reduction in the average high-temperature, down to a still tropical 89.1°F (31.7°C) from August's 94.6°F (34.8°C). Nightly average temperatures in September reveal a significant dip from daytime highs in White Sands National Monument, registering a consistent a fresh 54.1°F (12.3°C).

Rainfall

In White Sands National Monument, during September, the rain falls for 5 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, in White Sands National Monument, there are 42 rainfall days, and 9.02" (229mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of September in White Sands National Monument, sunrise is at 6:40 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:50 pm MDT.
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Frequently asked questions

How hot does it get in White Sands National Monument in September?

The high-temperature in White Sands National Monument, New Mexico, during September is 89.1°F (31.7°C) and the low-temperature is 54.1°F (12.3°C).

How many days does it rain in September in White Sands National Monument?

In White Sands National Monument, New Mexico, in September, it is raining for 5 days, with typically 1.3" (33mm) of accumulated precipitation.

When it does not snow in White Sands National Monument?

In White Sands National Monument, snow does not fall in April through October.

How many hours of daylight does White Sands National Monument have in September?

The average day length in September is 12h and 22min.

When are sunrise and sunset in September in White Sands National Monument?

In September, on the first day of the month, sunrise is at 6:40 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:50 pm MDT.
Average rainfall days
Average snowfall
Average daylight

Average temperature in September
White Sands National Monument, NM

Average temperature in September - White Sands National Monument, NM
  • Average high temperature in September: 89°F

The warmest month (with the highest average high temperature) is July (97.2°F).
The month with the lowest average high temperature is December (56.7°F).

  • Average low temperature in September: 54.2°F

The month with the highest average low temperature is July (64.1°F).
The coldest month (with the lowest average low temperature) is December (21.7°F).

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Average rainfall in September
White Sands National Monument, NM

Average rainfall in September - White Sands National Monument, NM
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is August (1.8").
The driest months (with the least rainfall) are March and April (0.3").

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Average rainfall days in September
White Sands National Monument, NM

Average rainfall days in September - White Sands National Monument, NM
  • Average rainfall days in September: 5 days

The month with the highest number of rainy days is August (7 days).
The months with the least rainy days are March, April, May and November (2 days).

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Average snowfall in September
White Sands National Monument, NM

Average snowfall in September - White Sands National Monument, NM
  • Average snowfall in September: 0"

The month with the highest snowfall is December (1").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average daylight in September
White Sands National Monument, NM

Average daylight in September - White Sands National Monument, NM
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

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White Sands National Monument, New Mexico, USA

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