September weather forecast and climate
Las Cruces, NM

The lovely hilly countryside in Las Cruces, New Mexico
The lovely hilly countryside in Las Cruces, New Mexico

Weather in September

The first month of the autumn, September, is still a warm month in Las Cruces, New Mexico, with average temperature fluctuating between 66.6°F (19.2°C) and 84.4°F (29.1°C).

Temperature

In September, the average high-temperature slightly decreases, from a tropical 90.5°F (32.5°C) in August, to a warm 84.4°F (29.1°C). In September, in Las Cruces, the average low-temperature is 66.6°F (19.2°C).

Heat index

In September, the average heat index is estimated at 84.4°F (29.1°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like differences in body mass, height, and shape, wind, pregnancy, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in September is 44%.

Rainfall

In Las Cruces, during 12.5 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. In Las Cruces, during the entire year, the rain falls for 84.4 days and collects up to 9.72" (247mm) of precipitation.

Snowfall

March through October are months without snowfall.

Daylight

The average length of the day in Las Cruces is 12.4h.

Sunshine

In September, the average sunshine is 11.1h.

UV index

In September, the average daily maximum UV index in Las Cruces is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Las Cruces?

In September, in Las Cruces, the average high-temperature is 84.4°F (29.1°C), and the average low-temperature is 66.6°F (19.2°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), that factores the actual air temperature with the relative humidity, in September is calculated to 84.4°F (29.1°C).

What is the average humidity in September in Las Cruces?

In September, the average relative humidity in Las Cruces is 44%.

How many days does it rain in September in Las Cruces?

In Las Cruces, New Mexico, during September, the rain falls for 12.5 days and regularly aggregates up to 1.61" (41mm) of precipitation.

When it does not snow in Las Cruces?

March through October are months without snowfall.

How many hours of daylight does Las Cruces have in September?

The average length of the day in September is 12.4h.

How many hours of sunshine does Las Cruces have in September?

The average sunshine in September in Las Cruces, New Mexico, is 11.1h.

What is the UV index reading in September in Las Cruces?

In September, the average daily maximum UV index in Las Cruces is 6. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV radiation.

Average temperature in September
Las Cruces, NM

Average temperature in September - Las Cruces, NM
  • Average high temperature in September: 84.4°F

The warmest month (with the highest average high temperature) is June (93.9°F).
The month with the lowest average high temperature is January (53.6°F).

  • Average low temperature in September: 66.6°F

The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).

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Average pressure in September
Las Cruces, NM

Average pressure in September - Las Cruces, NM
  • Average pressure in September: 29.94"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.83").

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Average wind speed in September
Las Cruces, NM

Average wind speed in September - Las Cruces, NM
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is January (6mph).

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Average humidity in September
Las Cruces, NM

Average humidity in September - Las Cruces, NM
  • Average humidity in September: 44%

The month with the highest relative humidity is December (50%).
Months with the lowest relative humidity are April and May (22%).

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Average rainfall in September
Las Cruces, NM

Average rainfall in September - Las Cruces, NM
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is July (2.28").
The driest month (with the least rainfall) is April (0.12").

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Average rainfall days in September
Las Cruces, NM

Average rainfall days in September - Las Cruces, NM
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is May (2.8 days).

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Average snowfall in September
Las Cruces, NM

Average snowfall in September - Las Cruces, NM
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.67").
Months with the least snowfall are March, April, May, June, July, August, September and October (0").

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Average snowfall days in September
Las Cruces, NM

Average snowfall days in September - Las Cruces, NM
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (1.1 days).
Months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Las Cruces, NM

Average daylight in September / Average sunshine in September - Las Cruces, NM
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 11.1h

The month with the most sunshine is June (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 7.1h).

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Average sunshine days in September
Las Cruces, NM

Average sunshine days in September - Las Cruces, NM
  • Average sunshine days in September: 13.8 days

Months with the most sunshine days are January and April (26.8 days).
The month with the least sunshine days is July (10.3 days).

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Average UV index in September
Las Cruces, NM

Average UV index in September - Las Cruces, NM
  • Average UV index in September: 6

Months with the highest UV index are May, June, July and August (UV index 7).
Months with the lowest UV index are January, November and December (UV index 3).

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Average cloud cover in September
Las Cruces, NM

Average cloud cover in September - Las Cruces, NM
  • Average cloud cover in September: 16

Months with the most cloud cover are July and December (Cloud cover 18).
The month with the least cloud cover is May (Cloud cover 8).

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Average visibility in September
Las Cruces, NM

Average visibility in September - Las Cruces, NM
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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