September weather forecast
Ennis, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Ennis, Texas, with an average temperature varying between 88°F (31.1°C) and 69.8°F (21°C).

Temperature

September brings a slight decrease in the average high-temperature, shifting from a fiery hot 95.5°F (35.3°C) in August to a hot 88°F (31.1°C). During the nights in September, Ennis experiences a consistent average temperature of 69.8°F (21°C).

Heat index

During September, the heat index is calculated to be a sweltering 98.6°F (37°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Research indicates the heat index considers values in shaded locales and with light winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in September in Ennis is 66%.

Rainfall

In September, in Ennis, the rain falls for 14.7 days. Throughout September, 2.48" (63mm) of precipitation is accumulated. In Ennis, during the entire year, the rain falls for 140.9 days and collects up to 31.5" (800mm) of precipitation.

Snowfall

In Ennis, snow does not fall in April through December.

Daylight

In Ennis, the average length of the day in September is 12h and 21min.
On the first day of September in Ennis, Texas, sunrise is at 7:02 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:12 pm CDT.

Sunshine

In September, the average sunshine in Ennis is 8.5h.

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 the average person.
Note: An average UV index of 6 in September transforms into this advice:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Ennis in September?

The average high-temperature and low-temperature during September are 88°F (31.1°C) and 69.8°F (21°C) respectively. In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 98.6°F (37°C).

What is the average humidity in September in Ennis?

In Ennis, Texas, the average relative humidity in September is 66%.

How many days does it rain in September in Ennis?

In Ennis, Texas, in September, it is raining for 14.7 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow in Ennis?

April through December are months without snowfall in Ennis, Texas.

What is the average length of the day in September in Ennis?

In September, the average day length in Ennis, Texas, is 12h and 21min.

What time are sunrise and sunset in September in Ennis?

On the first day of September in Ennis, sunrise is at 7:02 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:12 pm CDT.

How many hours of sunshine does Ennis have in September?

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

What is the UV index intensity in September in Ennis?

In Ennis, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Ennis, TX

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

The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (55.2°F).

  • Average low temperature in September: 69.8°F

The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).

Average pressure in September
Ennis, TX

Average pressure in September - Ennis, 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).

Average wind speed in September
Ennis, TX

Average wind speed in September - Ennis, TX
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).

Average humidity in September
Ennis, TX

Average humidity in September - Ennis, TX
  • Average humidity in September: 66%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (59%).

Average rainfall in September
Ennis, TX

Average rainfall in September - Ennis, TX
  • Average rainfall in September: 2.48"

The wettest month (with the highest rainfall) is October (4.45").
The driest month (with the least rainfall) is February (1.81").

Average rainfall days in September
Ennis, TX

Average rainfall days in September - Ennis, TX
  • Average rainfall days in September: 14.7 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in September
Ennis, TX

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

The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Ennis, TX

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

The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Ennis, TX

Average daylight in September / Average sunshine in September - Ennis, TX
  • 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: 8h and 3min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Ennis, TX

Average sunshine days in September - Ennis, TX
  • Average sunshine days in September: 13.5 days

The month with the most sunshine days is January (22 days).
The month with the least sunshine days is May (13.2 days).

Average UV index in September
Ennis, TX

Average UV index in September - Ennis, TX
  • Average UV index in September: 6

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

Average cloud cover in September
Ennis, TX

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

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 21).

Average visibility in September
Ennis, TX

Average visibility in September - Ennis, 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).

Ennis, Texas, USA

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