September weather forecast
Greatwood, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Greatwood, Texas, with temperature in the range of an average high of 88°F (31.1°C) and an average low of 72.1°F (22.3°C).

Temperature

In Greatwood, the average high-temperature in September gently drops from a hot 93.7°F (34.3°C) in August to a still tropical 88°F (31.1°C). An average nighttime temperature of 72.1°F (22.3°C) is recorded during September.

Heat index

For September, the heat index is appraised at an extremely hot 104°F (40°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The average relative humidity in September is 76%.

Rainfall

The month with the most rainfall is September, when the rain falls for 19.7 days and typically aggregates up to 4.49" (114mm) of precipitation.

Snowfall

March through November are months without snowfall.

Daylight

In Greatwood, the average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:00 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:09 pm CDT.

Sunshine

In September, the average sunshine is 8.4h.

UV index

In Greatwood, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: In September, the maximum UV index of 6 suggests these recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Frequently asked questions

How hot is it in September?

The average high-temperature, in September, in Greatwood, is 88°F (31.1°C), while the average low-temperature is 72.1°F (22.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is appraised at 104°F (40°C).

What is the average humidity in September?

In September, the average relative humidity is 76%.

What is the wettest month in Greatwood?

The month with the most rainfall is September, when the rain falls for 19.7 days and typically aggregates up to 4.49" (114mm) of precipitation.

How many days does it rain in September?

In Greatwood, in September, it is raining for 19.7 days, with typically 4.49" (114mm) of accumulated precipitation.

When it does not snow?

March through November are months without snowfall.

How many hours of daylight does Greatwood have in September?

The average day length in September is 12h and 20min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 7:00 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:09 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.4h.

What is the UV index reading in September?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
Greatwood, TX

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

The warmest month (with the highest average high temperature) is August (93.7°F).
The month with the lowest average high temperature is January (61.3°F).

  • Average low temperature in September: 72.1°F

The month with the highest average low temperature is August (76.5°F).
The coldest month (with the lowest average low temperature) is January (45.9°F).

Average pressure in September
Greatwood, TX

Average pressure in September - Greatwood, TX
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Greatwood, TX

Average wind speed in September - Greatwood, TX
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).

Average humidity in September
Greatwood, TX

Average humidity in September - Greatwood, TX
  • Average humidity in September: 76%

The months with the highest relative humidity are February and March (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Greatwood, TX

Average rainfall in September - Greatwood, TX
  • Average rainfall in September: 4.49"

The wettest month (with the highest rainfall) is September (4.49").
The driest month (with the least rainfall) is February (1.69").

Average rainfall days in September
Greatwood, TX

Average rainfall days in September - Greatwood, TX
  • Average rainfall days in September: 19.7 days

The month with the highest number of rainy days is September (19.7 days).
The month with the least rainy days is January (11.4 days).

Average snowfall in September
Greatwood, TX

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

The month with the highest snowfall is December (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Greatwood, TX

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

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

Average sunshine days in September
Greatwood, TX

Average sunshine days in September - Greatwood, TX
  • Average sunshine days in September: 8.1 days

The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is September (8.1 days).

Average UV index in September
Greatwood, TX

Average UV index in September - Greatwood, 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
Greatwood, TX

Average cloud cover in September - Greatwood, TX
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are August and October (Cloud cover 29).

Average visibility in September
Greatwood, TX

Average visibility in September - Greatwood, TX
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).

Greatwood, Texas, USA

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