September weather forecast
Arlington, TX

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Weather in September

September signifies the dawn of fall, with a slight drop in temperatures compared to the peak summer months. Paving the way for a more pleasant climate, the weather makes a slow transition from the extremes of summer. As the rain lessens, the landscape of Arlington transforms, enabling residents to relish the unique blend of summer and autumn. Increased visibility up to 6 miles allows for picturesque views of the transforming flora. The incidence of winds picks a bit to 6.6mph (10.6km/h), offering coolness to the setting festive atmosphere.

Temperature

September's onset brings a negligible change in high-temperatures, falling from a fiery hot 95.9°F (35.5°C) in August to a tropical 88°F (31.1°C). An average low-temperature of 69.6°F (20.9°C) is observed in Arlington during the September nights.

Heat index

The average heat index in September is computed to be a torrid 96.8°F (36°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Arlington, Texas, the average relative humidity in September is 63%.

Rainfall

In September, in Arlington, Texas, the rain falls for 14.4 days. Throughout September, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 136.1 rainfall days, and 29.72" (755mm) of precipitation is accumulated.

Snowfall

In Arlington, snow does not fall in March through October.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 7:03 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:13 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 6 suggests this advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

How hot is it in Arlington in September?

An average high-temperature, in September, in Arlington, is 88°F (31.1°C) and the average low-temperature is 69.6°F (20.9°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is computed to be 96.8°F (36°C).

What is the average humidity in September in Arlington?

The average relative humidity in September in Arlington is 63%.

How many days does it rain in September in Arlington?

In Arlington, Texas, in September, it is raining for 14.4 days, with typically 2.64" (67mm) of accumulated precipitation.

When it does not snow in Arlington?

March through October are months without snowfall in Arlington, Texas.

How many hours of daylight does Arlington have in September?

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

When are sunrise and sunset in September in Arlington?

In September, on the first day of the month, sunrise is at 7:03 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:13 pm CDT.

How long on average sun shines in September in Arlington?

In Arlington, the average sunshine duration in September is 8.5h.

What is the UV index intensity in September in Arlington?

In September, the average daily maximum UV index in Arlington is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
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
Arlington, TX

Average temperature in September - Arlington, TX
  • Average high temperature in September: 88°F

The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (55.2°F).

  • Average low temperature in September: 69.6°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (39°F).

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Average pressure in September
Arlington, TX

Average pressure in September - Arlington, TX
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in September
Arlington, TX

Average wind speed in September - Arlington, TX
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

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Average humidity in September
Arlington, TX

Average humidity in September - Arlington, TX
  • Average humidity in September: 63%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in September
Arlington, TX

Average rainfall in September - Arlington, TX
  • Average rainfall in September: 2.64"

The wettest month (with the highest rainfall) is October (3.98").
The driest month (with the least rainfall) is February (1.46").

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Average rainfall days in September
Arlington, TX

Average rainfall days in September - Arlington, TX
  • Average rainfall days in September: 14.4 days

The months with the highest number of rainy days are May and September (14.4 days).
The month with the least rainy days is January (6.2 days).

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Average snowfall in September
Arlington, TX

Average snowfall in September - Arlington, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.79").
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
Arlington, TX

Average snowfall days in September - Arlington, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.3 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
Arlington, TX

Average daylight in September / Average sunshine in September - Arlington, TX
  • 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).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in September
Arlington, TX

Average sunshine days in September - Arlington, TX
  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is May (13.7 days).

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Average UV index in September
Arlington, TX

Average UV index in September - Arlington, TX
  • 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 and December (UV index 3).

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Average cloud cover in September
Arlington, TX

Average cloud cover in September - Arlington, TX
  • Average cloud cover in September: 29

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in September
Arlington, TX

Average visibility in September - Arlington, TX
  • 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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Arlington, Texas, USA

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