September weather forecast
Schertz, TX

Share

Weather in September

September, the first month of the autumn in Schertz, is still a hot month, with an average temperature fluctuating between 71.6°F (22°C) and 89.1°F (31.7°C).

Temperature

Schertz's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's fiery hot 96.6°F (35.9°C) to a tropical 89.1°F (31.7°C). September witnesses an average nighttime temperature of 71.6°F (22°C) in Schertz.

Heat index

September's average heat index is evaluated at a torrid 102.2°F (39°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In September, the average relative humidity in Schertz is 68%.

Rainfall

In Schertz, during September, the rain falls for 15.7 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, in Schertz, there are 138.4 rainfall days, and 19.57" (497mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Schertz, the average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:10 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:19 pm CDT.

Sunshine

The average sunshine in September in Schertz is 8.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in September interprets into the following advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. 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. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
[Resources]

Frequently asked questions

How hot is it in Schertz in September?

The average high-temperature and low-temperature during September are 89.1°F (31.7°C) and 71.6°F (22°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in September is evaluated at 102.2°F (39°C).

What is the average humidity in September in Schertz?

In September, the average relative humidity is 68%.

How many days does it rain in September in Schertz?

In Schertz, Texas, in September, during 15.7 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

When it does not snow in Schertz?

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

What is the average length of the day in September in Schertz?

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

When is the sunrise / sunset in September in Schertz?

On the first day of September in Schertz, sunrise is at 7:10 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:19 pm CDT.

How long on average sun shines in September in Schertz?

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

How high is the UV index in September in Schertz?

In Schertz, Texas, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Schertz, TX

Average temperature in September - Schertz, TX
  • Average high temperature in September: 89.1°F

The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is January (61.3°F).

  • Average low temperature in September: 71.6°F

The month with the highest average low temperature is August (75.9°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

[Resources]

Average pressure in September
Schertz, TX

Average pressure in September - Schertz, TX
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

[Resources]

Average wind speed in September
Schertz, TX

Average wind speed in September - Schertz, TX
  • Average wind speed in September: 6.3mph

The windiest months (with the highest average wind speed) are March and May (8.7mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).

[Resources]

Average humidity in September
Schertz, TX

Average humidity in September - Schertz, TX
  • Average humidity in September: 68%

The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (61%).

[Resources]

Average rainfall in September
Schertz, TX

Average rainfall in September - Schertz, TX
  • Average rainfall in September: 2.83"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is February (0.63").

[Resources]

Average rainfall days in September
Schertz, TX

Average rainfall days in September - Schertz, TX
  • Average rainfall days in September: 15.7 days

The month with the highest number of rainy days is May (15.9 days).
The months with the least rainy days are January and November (8.8 days).

[Resources]

Average snowfall in September
Schertz, TX

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

The months with the highest snowfall are January and February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

[Resources]

Average snowfall days in September
Schertz, TX

Average snowfall days in September - Schertz, 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).

[Resources]

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

Average daylight in September / Average sunshine in September - Schertz, 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 July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

[Resources]

Average sunshine days in September
Schertz, TX

Average sunshine days in September - Schertz, TX
  • Average sunshine days in September: 12.6 days

The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is May (12.1 days).

[Resources]

Average UV index in September
Schertz, TX

Average UV index in September - Schertz, 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).

[Resources]

Average cloud cover in September
Schertz, TX

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

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 24).

[Resources]

Average visibility in September
Schertz, TX

Average visibility in September - Schertz, 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).

[Resources]

Schertz, Texas, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location