September weather forecast
Carta Valley, TX

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Weather in September

September, the first month of the autumn in Carta Valley, is also a hot month, with an average temperature ranging between max 90.7°F (32.6°C) and min 73.6°F (23.1°C).

Temperature

September heralds a minor drop in average high-temperature, sliding from August's sweltering 97.9°F (36.6°C) to a hot 90.7°F (32.6°C). Throughout September, Carta Valley experiences a low-temperature average of 73.6°F (23.1°C).

Heat index

For September, the heat index is evaluated at a fiery hot 98.6°F (37°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. 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 remain especially vital for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In September, the average relative humidity is 55%.

Rainfall

In Carta Valley, in September, during 11 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 90 rainfall days, and 11.93" (303mm) of precipitation is accumulated.

Snowfall

March through December are months without snowfall in Carta Valley.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of the month, sunrise is at 7:20 am and sunset at 8:04 pm. On the last day of September, sunrise is at 7:35 am and sunset at 7:28 pm CDT.

Sunshine

In Carta Valley, the average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily high UV index of 6 in September leads to these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

September temperatures vary between a high-temperature of 90.7°F (32.6°C) and a low-temperature of 73.6°F (23.1°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 98.6°F (37°C).

What is the average humidity in September?

In September, the average relative humidity in Carta Valley is 55%.

How much does it rain in September?

In September, the rain falls for 11 days. Throughout September, 1.46" (37mm) of precipitation is accumulated.

When it does not snow?

In Carta Valley, snow does not fall in March through December.

How many hours of daylight does Carta Valley have in September?

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

When are sunrise and sunset in September?

On the first day of September in Carta Valley, sunrise is at 7:20 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:28 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.7h.

How high is the UV index in September?

In Carta Valley, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to 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
Carta Valley, TX

Average temperature in September - Carta Valley, TX
  • Average high temperature in September: 90.7°F

The warmest month (with the highest average high temperature) is August (97.9°F).
The month with the lowest average high temperature is January (63.3°F).

  • Average low temperature in September: 73.6°F

The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (45°F).

Average pressure in September
Carta Valley, TX

Average pressure in September - Carta Valley, TX
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).

Average wind speed in September
Carta Valley, TX

Average wind speed in September - Carta Valley, TX
  • Average wind speed in September: 10.2mph

The windiest month (with the highest average wind speed) is June (13.6mph).
The calmest months (with the lowest average wind speed) are January and December (8.9mph).

Average humidity in September
Carta Valley, TX

Average humidity in September - Carta Valley, TX
  • Average humidity in September: 55%

The month with the highest relative humidity is November (59%).
The month with the lowest relative humidity is August (46%).

Average rainfall in September
Carta Valley, TX

Average rainfall in September - Carta Valley, TX
  • Average rainfall in September: 1.46"

The wettest month (with the highest rainfall) is May (2.24").
The driest months (with the least rainfall) are January, February and December (0.47").

Average rainfall days in September
Carta Valley, TX

Average rainfall days in September - Carta Valley, TX
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in September
Carta Valley, TX

Average snowfall in September - Carta Valley, TX
  • Average snowfall in September: 0"

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

Average snowfall days in September
Carta Valley, TX

Average snowfall days in September - Carta Valley, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (0.5 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
Carta Valley, TX

Average daylight in September / Average sunshine in September - Carta Valley, 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 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 6min).

Average sunshine days in September
Carta Valley, TX

Average sunshine days in September - Carta Valley, TX
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is January (25.8 days).
The month with the least sunshine days is May (16.3 days).

Average UV index in September
Carta Valley, TX

Average UV index in September - Carta Valley, TX
  • Average UV index in September: 6

The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Carta Valley, TX

Average cloud cover in September - Carta Valley, TX
  • Average cloud cover in September: 29

The months with the most cloud cover are March and May (Cloud cover 32).
The month with the least cloud cover is August (Cloud cover 17).

Average visibility in September
Carta Valley, TX

Average visibility in September - Carta Valley, 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).

Carta Valley, Texas, USA

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