September weather forecast
Elmendorf, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Elmendorf, Texas, with an average temperature fluctuating between 72.1°F (22.3°C) and 90°F (32.2°C).

Temperature

September brings a slight decrease in temperature, down from a very hot 97°F (36.1°C) in August to a tropical 90°F (32.2°C). Elmendorf usually reports an average low-temperature of 72.1°F (22.3°C) during the month of September.

Heat index

The average heat index in September is estimated at a blisteringly hot 104°F (40°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Know that the heat index computations account for shaded terrains and slight winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

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

Rainfall

In Elmendorf, during September, the rain falls for 15.5 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Elmendorf, during the entire year, the rain falls for 123.5 days and collects up to 14.02" (356mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of September, sunrise is at 7:11 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

In Elmendorf, Texas, the average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September in Elmendorf is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. 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.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Elmendorf in September?

An average high-temperature, in September, in Elmendorf, is 90°F (32.2°C) and the average low-temperature is 72.1°F (22.3°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is estimated at 104°F (40°C).

What is the average humidity in September in Elmendorf?

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

How many days does it rain in September in Elmendorf?

In Elmendorf, Texas, during September, the rain falls for 15.5 days and regularly aggregates up to 2.05" (52mm) of precipitation.

When it does not snow in Elmendorf?

January, March through November are months without snowfall in Elmendorf, Texas.

How many hours of daylight does Elmendorf have in September?

In September, the average day length in Elmendorf is 12h and 19min.

What time are sunrise and sunset in September in Elmendorf?

In September, on the first day of the month, sunrise is at 7:11 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 Elmendorf?

In Elmendorf, the average sunshine duration in September is 8.5h.

How high is the UV index in September in Elmendorf?

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes 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
Elmendorf, TX

Average temperature in September - Elmendorf, TX
  • Average high temperature in September: 90°F

The warmest month (with the highest average high temperature) is August (97°F).
The month with the lowest average high temperature is January (62.2°F).

  • Average low temperature in September: 72.1°F

The month with the highest average low temperature is August (76.1°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).

Average pressure in September
Elmendorf, TX

Average pressure in September - Elmendorf, 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).

Average wind speed in September
Elmendorf, TX

Average wind speed in September - Elmendorf, TX
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is May (9.1mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

Average humidity in September
Elmendorf, TX

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

The months with the highest relative humidity are March and May (74%).
The month with the lowest relative humidity is August (61%).

Average rainfall in September
Elmendorf, TX

Average rainfall in September - Elmendorf, TX
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is February (0.39").

Average rainfall days in September
Elmendorf, TX

Average rainfall days in September - Elmendorf, TX
  • Average rainfall days in September: 15.5 days

The month with the highest number of rainy days is September (15.5 days).
The month with the least rainy days is November (7.3 days).

Average snowfall in September
Elmendorf, TX

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

The months with the highest snowfall are February and December (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Elmendorf, TX

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

The month with the highest number of snowfall days is 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
Elmendorf, TX

Average daylight in September / Average sunshine in September - Elmendorf, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in September
Elmendorf, TX

Average sunshine days in September - Elmendorf, TX
  • Average sunshine days in September: 12.8 days

The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is September (12.8 days).

Average UV index in September
Elmendorf, TX

Average UV index in September - Elmendorf, 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
Elmendorf, TX

Average cloud cover in September - Elmendorf, TX
  • Average cloud cover in September: 32

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in September
Elmendorf, TX

Average visibility in September - Elmendorf, 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).

Elmendorf, Texas, USA

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