September weather forecast
Portair, NM

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Weather in September

September, the first month of the autumn in Portair, is also a moderately hot month, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 61.2°F (16.2°C).

Temperature

The transition into September subtly indicates a reduction in the average high-temperature, down to a warm 81.7°F (27.6°C) from August's hot 90.1°F (32.3°C). In Portair, an average temperature of 61.2°F (16.2°C) is noted during September nights.

Heat index

The heat index value during September is evaluated at 82.4°F (28°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold great significance to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

In September, the average relative humidity is 53%.

Rainfall

In Portair, in September, it is raining for 12.1 days, with typically 1.73" (44mm) of accumulated precipitation. In Portair, New Mexico, during the entire year, the rain falls for 86.6 days and collects up to 11.77" (299mm) of precipitation.

Snowfall

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

Daylight

In Portair, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:27 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:38 pm MDT.

Sunshine

In Portair, New Mexico, the average sunshine in September is 10.2h.

UV index

In Portair, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.

Frequently asked questions

What are September temperatures?

In Portair, in September, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 61.2°F (16.2°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is evaluated at 82.4°F (28°C).

What is the average humidity in September?

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

How much does it rain in September?

In Portair, in September, during 12.1 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

When it does not snow in Portair?

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

Does it snow in September?

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

How many hours of daylight does Portair have in September?

In Portair, the average day length in September is 12h and 23min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:27 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:38 pm MDT.

How long on average sun shines in September?

In Portair, the average sunshine duration in September is 10.2h.

What is the UV index intensity in September?

In Portair, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from 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
Portair, NM

Average temperature in September - Portair, 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
Portair, NM

Average pressure in September - Portair, 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
Portair, NM

Average wind speed in September - Portair, 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
Portair, NM

Average humidity in September - Portair, 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
Portair, NM

Average rainfall in September - Portair, 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
Portair, NM

Average rainfall days in September - Portair, 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
Portair, NM

Average snowfall in September - Portair, 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
Portair, NM

Average snowfall days in September - Portair, 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
Portair, NM

Average daylight in September / Average sunshine in September - Portair, NM
  • Average daylight in September: 12h and 2min

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 1min

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
Portair, NM

Average sunshine days in September - Portair, 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
Portair, NM

Average UV index in September - Portair, 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
Portair, NM

Average cloud cover in September - Portair, 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
Portair, NM

Average visibility in September - Portair, 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).

Portair, New Mexico, USA

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