September weather forecast
San Perlita, TX

Weather in September

September, the first month of the autumn in San Perlita, is still a hot month, with an average temperature fluctuating between 77.9°F (25.5°C) and 90.5°F (32.5°C).

Temperature

In San Perlita, the average high-temperature in September is almost the same as in August - a hot 90.5°F (32.5°C). In September, in San Perlita, the average low-temperature is 77.9°F (25.5°C).

Heat index

The average heat index in September is evaluated at a blistering 107.6°F (42°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like wind, clothing, differences in body mass, height, and shape, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. 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 San Perlita, the average relative humidity in September is 69%.

Rainfall

September is the month with the most rainfall. Rain falls for 17.2 days and accumulates 2.64" (67mm) of precipitation.

Daylight

In San Perlita, Texas, the average length of the day in September is 12h and 18min.
On the first day of the month, sunrise is at 7:10 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:18 pm CDT.

Sunshine

In San Perlita, Texas, the average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September in San Perlita is 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 7 in September transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in San Perlita?

In September, in San Perlita, Texas, the average high-temperature is 90.5°F (32.5°C), and the average low-temperature is 77.9°F (25.5°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in September is evaluated at 107.6°F (42°C).

What is the average humidity in September in San Perlita?

In September, the average relative humidity is 69%.

What is the wettest month in San Perlita?

The month with the most rainfall is September, when the rain falls for 17.2 days and typically aggregates up to 2.64" (67mm) of precipitation.

How many days does it rain in September in San Perlita?

In San Perlita, Texas, in September, during 17.2 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

How many hours of daylight does San Perlita have in September?

The average day length in September in San Perlita is 12h and 18min.

When are sunrise and sunset in September in San Perlita?

In September, on the first day of the month, sunrise is at 7:10 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:18 pm CDT.

How long on average sun shines in September in San Perlita?

The average sunshine duration in September is 8.7h.

What is the UV index reading in September in San Perlita?

The average daily maximum UV index in September in San Perlita is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.

Average temperature in September
San Perlita, TX

Average temperature in September - San Perlita, TX
  • Average high temperature in September: 90.5°F

The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (68.5°F).

  • Average low temperature in September: 77.9°F

The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (54.1°F).

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Average pressure in September
San Perlita, TX

Average pressure in September - San Perlita, TX
  • Average pressure in September: 29.91"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in September
San Perlita, TX

Average wind speed in September - San Perlita, TX
  • Average wind speed in September: 8.9mph

The windiest months (with the highest average wind speed) are April and May (11.9mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).

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Average humidity in September
San Perlita, TX

Average humidity in September - San Perlita, TX
  • Average humidity in September: 69%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in September
San Perlita, TX

Average rainfall in September - San Perlita, TX
  • Average rainfall in September: 2.64"

The wettest month (with the highest rainfall) is September (2.64").
The driest month (with the least rainfall) is February (0.59").

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Average rainfall days in September
San Perlita, TX

Average rainfall days in September - San Perlita, TX
  • Average rainfall days in September: 17.2 days

The month with the highest number of rainy days is September (17.2 days).
The month with the least rainy days is July (7.4 days).

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Average daylight in September /
Average sunshine in September
San Perlita, TX

Average daylight in September / Average sunshine in September - San Perlita, TX
  • Average daylight in September: 12h and 18min

The month with the longest days is June (Average daylight: 13h and 47min).
The month with the shortest days is December (Average daylight: 10h and 31min).

  • Average sunshine in September: 8h and 42min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in September
San Perlita, TX

Average sunshine days in September - San Perlita, TX
  • Average sunshine days in September: 10.6 days

The month with the most sunshine days is July (22.1 days).
The month with the least sunshine days is September (10.6 days).

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Average UV index in September
San Perlita, TX

Average UV index in September - San Perlita, TX
  • Average UV index in September: 7

The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 4).

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Average cloud cover in September
San Perlita, TX

Average cloud cover in September - San Perlita, TX
  • Average cloud cover in September: 30

The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 18).

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Average visibility in September
San Perlita, TX

Average visibility in September - San Perlita, 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).

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