September weather forecast
Gonzales, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Gonzales, Texas, with temperature in the range of an average high of 89.4°F (31.9°C) and an average low of 71.6°F (22°C).

Temperature

September brings a slight decrease in the average high-temperature, shifting from a sweltering 97°F (36.1°C) in August to a hot 89.4°F (31.9°C). In the month of September, the nighttime temperature dips to a steady average of 71.6°F (22°C).

Heat index

For September, the heat index is calculated to be a scorching 104°F (40°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In September, the average relative humidity is 71%.

Rainfall

In September, the rain falls for 16.4 days. Throughout September, 2.8" (71mm) of precipitation is accumulated. Throughout the year, there are 146.3 rainfall days, and 21.34" (542mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:16 pm CDT.

Sunshine

In Gonzales, the average sunshine in September is 8.3h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during September translates into the following guidance:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Updated: Aug 23, 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 Gonzales, is 89.4°F (31.9°C), while the low-temperature averages to 71.6°F (22°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 104°F (40°C).

What is the average humidity in September?

The average relative humidity in September in Gonzales is 71%.

How many days does it rain in September?

In Gonzales, in September, it is raining for 16.4 days, with typically 2.8" (71mm) of accumulated precipitation.

When it does not snow?

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

How many hours of daylight does Gonzales have in September?

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

When is the sunrise / sunset in September in Gonzales?

On the first day of September, sunrise is at 7:07 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:16 pm CDT.

How many hours of sunshine does Gonzales have in September?

The average sunshine duration in September is 8.3h.

What is the UV index reading in September?

In Gonzales, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from 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
Gonzales, TX

Average temperature in September - Gonzales, TX
  • Average high temperature in September: 89.4°F

The warmest month (with the highest average high temperature) is August (97°F).
The month with the lowest average high temperature is January (60.8°F).

  • Average low temperature in September: 71.6°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

Average pressure in September
Gonzales, TX

Average pressure in September - Gonzales, TX
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Gonzales, TX

Average wind speed in September - Gonzales, TX
  • Average wind speed in September: 6mph

The windiest months (with the highest average wind speed) are February, March, April and May (8.3mph).
The calmest month (with the lowest average wind speed) is September (6mph).

Average humidity in September
Gonzales, TX

Average humidity in September - Gonzales, TX
  • Average humidity in September: 71%

The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is August (64%).

Average rainfall in September
Gonzales, TX

Average rainfall in September - Gonzales, TX
  • Average rainfall in September: 2.8"

The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is February (0.71").

Average rainfall days in September
Gonzales, TX

Average rainfall days in September - Gonzales, TX
  • Average rainfall days in September: 16.4 days

The month with the highest number of rainy days is September (16.4 days).
The month with the least rainy days is January (9.1 days).

Average snowfall in September
Gonzales, TX

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

The month with the highest snowfall is January (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
Gonzales, TX

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

The months with the highest number of snowfall days are January, February and December (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
Gonzales, TX

Average daylight in September / Average sunshine in September - Gonzales, 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: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

Average sunshine days in September
Gonzales, TX

Average sunshine days in September - Gonzales, TX
  • Average sunshine days in September: 12.1 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is June (11.1 days).

Average UV index in September
Gonzales, TX

Average UV index in September - Gonzales, TX
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Gonzales, TX

Average cloud cover in September - Gonzales, TX
  • Average cloud cover in September: 35

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

Average visibility in September
Gonzales, TX

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

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

Gonzales, Texas, USA

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