September weather forecastArch, NM

September

Weather in September

The first month of the autumn, September, is still a warm month in Arch, New Mexico, with temperature in the range of an average low of 61.2°F (16.2°C) and an average high of 81.7°F (27.6°C).

Temperature

The advent of September brings a slight shift in average high-temperature, moving from a hot 90.1°F (32.3°C) in August to a moderately hot 81.7°F (27.6°C). Throughout September, Arch witnesses a consistent average low-temperature of 61.2°F (16.2°C).

Heat index

The average heat index in September is evaluated at 82.4°F (28°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.
When referencing the heat index, its values are suitable for shady environments and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

In Arch, the average relative humidity in September is 53%.

Rainfall

In Arch, in September, it is raining for 12.1 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 86.6 rainfall days, and 11.77" (299mm) of precipitation is accumulated.

Snowfall

In Arch, snow does not fall in May through September.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:46 am and sunset at 6:37 pm MDT.

Sunshine

In Arch, the average sunshine in September is 10.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the UV index of 5 transforms into the following advice:
Exercise prevention - Precautions against solar damage are endorsed. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. 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.

Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, in Arch, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 61.2°F (16.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in September is evaluated at 82.4°F (28°C).

The average relative humidity in September is 53%.

In Arch, in September, it is raining for 12.1 days, with typically 1.73" (44mm) of accumulated precipitation.

In Arch, snow does not fall in May through September.

In Arch, in September, it doesn't snow. In October, it regularly snows.

In September, the average day length is 12h and 22min.

In September, on the first day of the month, sunrise is at 6:26 am and sunset at 7:18 pm. On the last day of the month, in Arch, sunrise is at 6:46 am and sunset at 6:37 pm MDT.

The average sunshine duration in September is 10.2h.

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

90.1°F

81.7°F

70.2°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.8mph

11mph

12.2mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

16.2

22.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Arch, NM

Average high temperature in September: 81.7°F

The warmest month (with the highest average high temperature) is June (90.7°F).
The month with the lowest average high temperature is December (50°F).

Average low temperature in September: 61.2°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).

Average pressure in September
Arch, NM

Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in September
Arch, NM

Average wind speed in September: 10.6mph

The windiest month (with the highest average wind speed) is April (13.3mph).
The calmest month (with the lowest average wind speed) is August (9.9mph).

Average humidity in September
Arch, NM

Average humidity in September: 53%

The month with the highest relative humidity is December (54%).
The month with the lowest relative humidity is April (34%).

Average rainfall in September
Arch, NM

Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is October (1.81").
The driest month (with the least rainfall) is November (0.28").

Average rainfall days in September
Arch, NM

Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is November (2.6 days).

Average snowfall in September
Arch, NM

Average snowfall in September: 0"

The months with the highest snowfall are January and February (1.34").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Arch, NM

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (3.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Arch, NM

Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

Average sunshine in September: 10h and 12min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 0min).

Average sunshine days in September
Arch, NM

Average sunshine days in September: 16.2 days

The month with the most sunshine days is January (26.4 days).
The month with the least sunshine days is August (14 days).

Average UV index in September
Arch, NM

Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Arch, NM

Average cloud cover in September: 19

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 13).

Average visibility in September
Arch, 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).