September weather forecast
Las Cruces, NM

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

Weather in September

In September, Las Cruces sees a distinct trend towards cooler weather. The scorching summer heat begins to wane, painting the town with a comfortable temperature range toppling at 84.4°F (29.1°C). The frequency and intensity of rain also start to decrease, marking the end of the summer monsoon. This month is characteristic of a transition from summer's sizzle to autumn's tranquility.

Temperature

September ushers in a minute temperature change, with average high-temperatures reducing from August's tropical 90.5°F (32.5°C) to a warm 84.4°F (29.1°C). Las Cruces records a mean low-temperature of 66.6°F (19.2°C) in September.

Heat index

The average heat index in September is computed to be 84.2°F (29°C). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.

Humidity

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

Rainfall

In Las Cruces, in September, it is raining for 12.5 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, there are 84.4 rainfall days, and 9.72" (247mm) of precipitation is accumulated.

Snowfall

In Las Cruces, snow does not fall in March through October.

Daylight

In Las Cruces, the average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:30 pm. On the last day of September, in Las Cruces, sunrise is at 7:00 am and sunset at 6:52 pm MDT.

Sunshine

In Las Cruces, the average sunshine in September is 11.1h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, an average UV index of 6 transforms into the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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Frequently asked questions

Is it hot in Las Cruces during September?

In September, the average high-temperature and low-temperature in Las Cruces, New Mexico, are 84.4°F (29.1°C) and 66.6°F (19.2°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 84.2°F (29°C).

What is the average humidity in September in Las Cruces?

In September, the average relative humidity is 44%.

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

In Las Cruces, 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?

In Las Cruces, New Mexico, snow does not fall in March through October.

What is the average length of the day in September in Las Cruces?

In September, the average day length in Las Cruces is 12h and 21min.

What time are sunrise and sunset in September in Las Cruces?

On the first day of September in Las Cruces, New Mexico, sunrise is at 6:42 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:52 pm MDT.

How long on average sun shines in September in Las Cruces?

In September, the average sunshine duration is 11.1h.

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

In Las Cruces, New Mexico, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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%).
The 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").
The 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).
The 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: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 11h and 1min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).

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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

The 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

The months with the highest UV index are May, June, July and August (UV index 7).
The 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

The 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

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

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Las Cruces, New Mexico, USA

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