September weather forecast
Needville, TX

Weather in September

September, the first month of the autumn in Needville, is still a tropical month, with an average temperature fluctuating between 72.1°F (22.3°C) and 87.4°F (30.8°C).

Temperature

In Needville, the average high-temperature in September marginally drops from 93.2°F (34°C) in August to a still tropical 87.4°F (30.8°C). In September, the average low-temperature is 72.1°F (22.3°C).

Heat index

The average heat index in September is evaluated at a sweltering 102.2°F (39°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for 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 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, differences in body mass, height, and shape, clothing), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 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. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In September, the average relative humidity in Needville is 77%.

Rainfall

In Needville, Texas, during September, the rain falls for 13.5 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Needville, during the entire year, the rain falls for 105 days and collects up to 9.33" (237mm) of precipitation.

Snowfall

March through November are months without snowfall.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of the month, sunrise is at 7:00 am and sunset at 7:45 pm. On the last day of September, in Needville, sunrise is at 7:16 am and sunset at 7:10 pm CDT.

Sunshine

In September, the average sunshine is 8.3h.

UV index

In Needville, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Needville?

In September, in Needville, the average high-temperature is 87.4°F (30.8°C), and the average low-temperature is 72.1°F (22.3°C). in September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 102.2°F (39°C).

What is the average humidity in September in Needville?

In Needville, the average relative humidity in September is 77%.

How many days does it rain in September in Needville?

In Needville, Texas, during September, the rain falls for 13.5 days and regularly aggregates up to 1.1" (28mm) of precipitation.

When it does not snow in Needville?

In Needville, Texas, snow does not fall in March through November.

How many hours of daylight does Needville have in September?

In September, the average day length in Needville, Texas, is 12h and 20min.

What time are sunrise and sunset in September in Needville?

In September, on the first day of the month, sunrise is at 7:00 am and sunset at 7:45 pm. On the last day of the month, in Needville, sunrise is at 7:16 am and sunset at 7:10 pm CDT.

How many hours of sunshine does Needville have in September?

The average sunshine duration in September in Needville is 8.3h.

What is the UV index intensity in September in Needville?

In September, the average daily maximum UV index in Needville, Texas, is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Needville, TX

Average temperature in September - Needville, TX
  • Average high temperature in September: 87.4°F

The warmest month (with the highest average high temperature) is August (93.2°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 (76.3°F).
The coldest month (with the lowest average low temperature) is January (45.9°F).

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Average pressure in September
Needville, TX

Average pressure in September - Needville, 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).

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Average wind speed in September
Needville, TX

Average wind speed in September - Needville, TX
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is September (5.8mph).

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Average humidity in September
Needville, TX

Average humidity in September - Needville, TX
  • Average humidity in September: 77%

The months with the highest relative humidity are February and March (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Needville, TX

Average rainfall in September - Needville, TX
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is May (1.22").
The driest month (with the least rainfall) is February (0.35").

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Average rainfall days in September
Needville, TX

Average rainfall days in September - Needville, TX
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is September (13.5 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall days in September
Needville, TX

Average snowfall days in September - Needville, 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).

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

Average daylight in September / Average sunshine in September - Needville, TX
  • Average daylight in September: 12h and 20min

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 18min

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 42min).

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Average sunshine days in September
Needville, TX

Average sunshine days in September - Needville, TX
  • Average sunshine days in September: 14.1 days

The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is September (14.1 days).

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Average UV index in September
Needville, TX

Average UV index in September - Needville, 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).

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Average cloud cover in September
Needville, TX

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

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in September
Needville, TX

Average visibility in September - Needville, 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).

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