September weather forecast
Powell, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Powell, Texas, with an average temperature fluctuating between 69.6°F (20.9°C) and 88.7°F (31.5°C).

Temperature

September sees a slight reduction in average high-temperature, with a shift from a very hot 95.5°F (35.3°C) in August to a tropical 88.7°F (31.5°C). Throughout September, the average low-temperature records at an agreeable 69.6°F (20.9°C).

Heat index

The heat index value during September is estimated at a very hot 100.4°F (38°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. 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. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In Powell, the average relative humidity in September is 67%.

Rainfall

In Powell, in September, it is raining for 11.5 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, in Powell, there are 113.6 rainfall days, and 16.38" (416mm) of precipitation is accumulated.

Snowfall

April through December are months without snowfall in Powell.

Daylight

In September, the average length of the day is 12h and 21min.
On the first day of the month, sunrise is at 7:01 am and sunset at 7:49 pm. On the last day of September, in Powell, sunrise is at 7:19 am and sunset at 7:10 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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 6 in September translates into this advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Frequently asked questions

How hot does it get in Powell in September?

During September, Powell experiences an average high-temperature of 88.7°F (31.5°C) and a low-temperature of 69.6°F (20.9°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is estimated at 100.4°F (38°C).

What is the average humidity in September in Powell?

The average relative humidity in September in Powell is 67%.

How many days does it rain in September in Powell?

In September, the rain falls for 11.5 days. Throughout September, 1.14" (29mm) of precipitation is accumulated.

When it does not snow in Powell?

In Powell, Texas, snow does not fall in April through December.

How many hours of daylight does Powell have in September?

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

When is the sunrise / sunset in September in Powell?

On the first day of September in Powell, sunrise is at 7:01 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:10 pm CDT.

How long on average sun shines in September in Powell?

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

What is the UV index reading in September in Powell?

In Powell, Texas, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe 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
Powell, TX

Average temperature in September - Powell, TX
  • Average high temperature in September: 88.7°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 (55.8°F).

  • Average low temperature in September: 69.6°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

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Average pressure in September
Powell, TX

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

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Powell, TX

Average wind speed in September - Powell, TX
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).

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Average humidity in September
Powell, TX

Average humidity in September - Powell, TX
  • Average humidity in September: 67%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (61%).

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Average rainfall in September
Powell, TX

Average rainfall in September - Powell, TX
  • Average rainfall in September: 1.14"

The wettest month (with the highest rainfall) is October (2.48").
The driest month (with the least rainfall) is January (0.79").

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Average rainfall days in September
Powell, TX

Average rainfall days in September - Powell, TX
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (12.9 days).
The month with the least rainy days is January (5.3 days).

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Average snowfall in September
Powell, TX

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

The month with the highest snowfall is February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Powell, TX

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

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Powell, 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 18min).

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Average sunshine days in September
Powell, TX

Average sunshine days in September - Powell, TX
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is May (14.7 days).

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Average UV index in September
Powell, TX

Average UV index in September - Powell, 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).

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Average cloud cover in September
Powell, TX

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

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in September
Powell, TX

Average visibility in September - Powell, 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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Powell, Texas, USA

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