September weather forecast
Farmers Branch, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Farmers Branch, Texas, with an average temperature fluctuating between 70.7°F (21.5°C) and 88°F (31.1°C).

Temperature

The start of September involves a subtle temperature drop, shifting from a sweltering 96.3°F (35.7°C) in August to a tropical 88°F (31.1°C). Farmers Branch records a steady low-temperature average of 70.7°F (21.5°C) during September.

Heat index

September's average heat index is evaluated at a torrid 96.8°F (36°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In Farmers Branch, Texas, the average relative humidity in September is 62%.

Rainfall

In Farmers Branch, in September, it is raining for 14.8 days, with typically 2.64" (67mm) of accumulated precipitation. In Farmers Branch, during the entire year, the rain falls for 142.4 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

In Farmers Branch, 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 September in Farmers Branch, sunrise is at 7:02 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:13 pm CDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

In September, the average high-temperature and low-temperature are 88°F (31.1°C) and 70.7°F (21.5°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in September is evaluated at 96.8°F (36°C).

What is the average humidity in September?

The average relative humidity in September is 62%.

How many days does it rain in September?

In Farmers Branch, during September, the rain falls for 14.8 days and regularly aggregates up to 2.64" (67mm) of precipitation.

When it does not snow?

March through October are months without snowfall.

How many hours of daylight does Farmers Branch have in September?

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

What time are sunrise and sunset in September in Farmers Branch?

On the first day of September, sunrise is at 7:02 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:13 pm CDT.

How long on average sun shines in September in Farmers Branch?

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

What is the UV index intensity in September?

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health threat 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
Farmers Branch, TX

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

The warmest month (with the highest average high temperature) is August (96.3°F).
The month with the lowest average high temperature is January (54.3°F).

  • Average low temperature in September: 70.7°F

The month with the highest average low temperature is August (77°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in September
Farmers Branch, TX

Average pressure in September - Farmers Branch, 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 (29.9"Hg).

Average wind speed in September
Farmers Branch, TX

Average wind speed in September - Farmers Branch, TX
  • Average wind speed in September: 6.7mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).

Average humidity in September
Farmers Branch, TX

Average humidity in September - Farmers Branch, TX
  • Average humidity in September: 62%

The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (54%).

Average rainfall in September
Farmers Branch, TX

Average rainfall in September - Farmers Branch, TX
  • Average rainfall in September: 2.64"

The wettest month (with the highest rainfall) is October (4.02").
The driest month (with the least rainfall) is February (1.73").

Average rainfall days in September
Farmers Branch, TX

Average rainfall days in September - Farmers Branch, TX
  • Average rainfall days in September: 14.8 days

The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (6.6 days).

Average snowfall in September
Farmers Branch, TX

Average snowfall in September - Farmers Branch, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in September
Farmers Branch, TX

Average snowfall days in September - Farmers Branch, TX
  • Average snowfall days in September: 0 days

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

Average daylight in September /
Average sunshine in September
Farmers Branch, TX

Average daylight in September / Average sunshine in September - Farmers Branch, 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 months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

Average sunshine days in September
Farmers Branch, TX

Average sunshine days in September - Farmers Branch, TX
  • Average sunshine days in September: 13.8 days

The month with the most sunshine days is January (23 days).
The month with the least sunshine days is September (13.8 days).

Average UV index in September
Farmers Branch, TX

Average UV index in September - Farmers Branch, TX
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Farmers Branch, TX

Average cloud cover in September - Farmers Branch, TX
  • Average cloud cover in September: 29

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in September
Farmers Branch, TX

Average visibility in September - Farmers Branch, 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).

Farmers Branch, Texas, USA

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