September weather forecast
Redwater, TX

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Weather in September

September, the first month of the autumn in Redwater, is still a hot month, with an average temperature varying between 87.8°F (31°C) and 66.7°F (19.3°C).

Temperature

Redwater's September weather shows a modest shift in high-temperatures, falling from August's tropical 94.1°F (34.5°C) to a still hot 87.8°F (31°C). During September, Redwater sees a mean low-temperature of 66.7°F (19.3°C).

Heat index

September's average heat index is calculated to be a very hot 98.6°F (37°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In September, the average relative humidity is 69%.

Rainfall

The month with the least rainfall in Redwater is September, when the rain falls for 11.2 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

In Redwater, snow does not fall in March through November.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:51 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:11 am and sunset at 7:02 pm CDT.

Sunshine

In September, the average sunshine is 9.4h.

UV index

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

The high-temperature, in September, in Redwater, is 87.8°F (31°C), while the low-temperature averages to 66.7°F (19.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, in September is calculated to be 98.6°F (37°C).

What is the average humidity in September?

In September, the average relative humidity is 69%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.2 days and accumulates 1.93" (49mm) of precipitation.

How many days does it rain in September in Redwater?

In September, the rain falls for 11.2 days. Throughout September, 1.93" (49mm) of precipitation is accumulated.

When it does not snow in Redwater?

In Redwater, snow does not fall in March through November.

How many hours of daylight does Redwater have in September?

The average day length in September is 12h and 22min.

When are sunrise and sunset in September?

On the first day of September in Redwater, sunrise is at 6:51 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:02 pm CDT.

How many hours of sunshine does Redwater have in September?

In September, the average sunshine duration is 9.4h.

What is the UV index reading in September?

In Redwater, 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 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
Redwater, TX

Average temperature in September - Redwater, TX
  • Average high temperature in September: 87.8°F

The warmest month (with the highest average high temperature) is August (94.1°F).
The month with the lowest average high temperature is January (52.3°F).

  • Average low temperature in September: 66.7°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).

Average pressure in September
Redwater, TX

Average pressure in September - Redwater, TX
  • Average pressure in September: 29.98"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
Redwater, TX

Average wind speed in September - Redwater, TX
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in September
Redwater, TX

Average humidity in September - Redwater, TX
  • Average humidity in September: 69%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (67%).

Average rainfall in September
Redwater, TX

Average rainfall in September - Redwater, TX
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is April (3.74").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in September
Redwater, TX

Average rainfall days in September - Redwater, TX
  • Average rainfall days in September: 11.2 days

The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in September
Redwater, TX

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

The month with the highest snowfall is February (0.55").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Redwater, TX

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

The month with the highest number of snowfall days is February (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
Redwater, TX

Average daylight in September / Average sunshine in September - Redwater, 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: 9h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).

Average sunshine days in September
Redwater, TX

Average sunshine days in September - Redwater, TX
  • Average sunshine days in September: 16.9 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (13.8 days).

Average UV index in September
Redwater, TX

Average UV index in September - Redwater, 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, February, November and December (UV index 3).

Average cloud cover in September
Redwater, TX

Average cloud cover in September - Redwater, TX
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in September
Redwater, TX

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

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

Redwater, Texas, USA

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