September weather forecast
Driscoll, TX

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Weather in September

September, the first month of the autumn in Driscoll, is still a tropical month, with an average temperature varying between 76.3°F (24.6°C) and 90.3°F (32.4°C).

Temperature

September's onset introduces a mild reduction in the average high-temperature, from a sweltering 95.9°F (35.5°C) in August to a tropical 90.3°F (32.4°C). During September, the average low-temperature is recorded at a warm 76.3°F (24.6°C).

Heat index

For most parts of September, the heat index is calculated to be a scorching 107.6°F (42°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. 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 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Driscoll, the average relative humidity in September is 70%.

Rainfall

The month with the most rainfall is September, when the rain falls for 14.6 days and typically aggregates up to 1.73" (44mm) of precipitation.

Snowfall

January, March through November are months without snowfall.

Daylight

In Driscoll, Texas, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:17 pm CDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 during September translates into the following guidance:
Prevent overexposure. Protection from the sun's harmful effects is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.

Frequently asked questions

How hot does it get in September?

September temperatures vary between a high-temperature of 90.3°F (32.4°C) and a low-temperature of 76.3°F (24.6°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 107.6°F (42°C).

What is the average humidity in September?

In Driscoll, Texas, the average relative humidity in September is 70%.

What is the rainiest month?

The month with the most rainfall is September, when the rain falls for 14.6 days and typically aggregates up to 1.73" (44mm) of precipitation.

How many days does it rain in September in Driscoll?

In Driscoll, during September, the rain falls for 14.6 days and regularly aggregates up to 1.73" (44mm) of precipitation.

When it does not snow?

January, March through November are months without snowfall.

What is the average length of the day in September?

The average day length in September is 12h and 19min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:17 pm CDT.

How many hours of sunshine does Driscoll have in September?

In Driscoll, the average sunshine duration in September is 8.6h.

What is the UV index intensity in September?

In Driscoll, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's 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
Driscoll, TX

Average temperature in September - Driscoll, TX
  • Average high temperature in September: 90.3°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 (65.5°F).

  • Average low temperature in September: 76.3°F

The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (50.5°F).

Average pressure in September
Driscoll, TX

Average pressure in September - Driscoll, TX
  • Average pressure in September: 29.91"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in September
Driscoll, TX

Average wind speed in September - Driscoll, TX
  • Average wind speed in September: 8.2mph

The windiest month (with the highest average wind speed) is May (11.1mph).
The calmest month (with the lowest average wind speed) is September (8.2mph).

Average humidity in September
Driscoll, TX

Average humidity in September - Driscoll, TX
  • Average humidity in September: 70%

The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (65%).

Average rainfall in September
Driscoll, TX

Average rainfall in September - Driscoll, TX
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is September (1.73").
The driest month (with the least rainfall) is February (0.47").

Average rainfall days in September
Driscoll, TX

Average rainfall days in September - Driscoll, TX
  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is September (14.6 days).
The month with the least rainy days is August (6.7 days).

Average snowfall in September
Driscoll, TX

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

The months with the highest snowfall are February and December (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Driscoll, TX

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

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Driscoll, TX
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

Average sunshine days in September
Driscoll, TX

Average sunshine days in September - Driscoll, TX
  • Average sunshine days in September: 13 days

The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is September (13 days).

Average UV index in September
Driscoll, TX

Average UV index in September - Driscoll, TX
  • Average UV index in September: 7

The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January and December (UV index 4).

Average cloud cover in September
Driscoll, TX

Average cloud cover in September - Driscoll, TX
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in September
Driscoll, TX

Average visibility in September - Driscoll, 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).

Driscoll, Texas, USA

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