September weather forecast
River Oaks, TX

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Weather in September

September, the first month of the autumn in River Oaks, is also a hot month, with an average temperature ranging between min 69.3°F (20.7°C) and max 87.3°F (30.7°C).

Temperature

In River Oaks, entering September brings a subtle temperature decrement, reducing from August's very hot 95.5°F (35.3°C) to a tropical 87.3°F (30.7°C). River Oaks's average low-temperature is measured at a pleasant 69.3°F (20.7°C) during September.

Heat index

September's heat index is calculated to be a very hot 95°F (35°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in September in River Oaks is 64%.

Rainfall

In September, the rain falls for 13.9 days. Throughout September, 2.8" (71mm) of precipitation is accumulated. Throughout the year, there are 128.8 rainfall days, and 27.8" (706mm) of precipitation is accumulated.

Snowfall

In River Oaks, snow does not fall in March through October.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of September, sunrise is at 7:04 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:15 pm CDT.

Sunshine

The average sunshine in September is 8.4h.

UV index

In September, the average daily maximum UV index in River Oaks is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 6 in September interprets into the following advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

In September, the average high-temperature and low-temperature are 87.3°F (30.7°C) and 69.3°F (20.7°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 95°F (35°C).

What is the average humidity in September?

The average relative humidity in September is 64%.

How many days does it rain in September?

In River Oaks, in September, it is raining for 13.9 days, with typically 2.8" (71mm) of accumulated precipitation.

When it does not snow?

March through October are months without snowfall.

How many hours of daylight does River Oaks have in September?

In September, the average day length is 12h and 22min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 7:04 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:15 pm CDT.

How many hours of sunshine does River Oaks have in September?

In River Oaks, the average sunshine duration in September is 8.4h.

What is the UV index reading in September in River Oaks?

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
River Oaks, TX

Average temperature in September - River Oaks, TX
  • Average high temperature in September: 87.3°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 (55.4°F).

  • Average low temperature in September: 69.3°F

The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).

Average pressure in September
River Oaks, TX

Average pressure in September - River Oaks, 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 (29.9"Hg).

Average wind speed in September
River Oaks, TX

Average wind speed in September - River Oaks, TX
  • Average wind speed in September: 6.8mph

The windiest months (with the highest average wind speed) are March and April (10.5mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).

Average humidity in September
River Oaks, TX

Average humidity in September - River Oaks, TX
  • Average humidity in September: 64%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (56%).

Average rainfall in September
River Oaks, TX

Average rainfall in September - River Oaks, TX
  • Average rainfall in September: 2.8"

The wettest month (with the highest rainfall) is October (3.7").
The driest month (with the least rainfall) is February (1.42").

Average rainfall days in September
River Oaks, TX

Average rainfall days in September - River Oaks, TX
  • Average rainfall days in September: 13.9 days

The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (6 days).

Average snowfall in September
River Oaks, TX

Average snowfall in September - River Oaks, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.22").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in September
River Oaks, TX

Average snowfall days in September - River Oaks, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
River Oaks, TX

Average daylight in September / Average sunshine in September - River Oaks, 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: 8h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in September
River Oaks, TX

Average sunshine days in September - River Oaks, TX
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is May (14.8 days).

Average UV index in September
River Oaks, TX

Average UV index in September - River Oaks, TX
  • Average UV index in September: 6

The months with the highest UV index are May, 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
River Oaks, TX

Average cloud cover in September - River Oaks, TX
  • Average cloud cover in September: 29

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 19).

Average visibility in September
River Oaks, TX

Average visibility in September - River Oaks, 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).

River Oaks, Texas, USA

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