September weather forecast
Los Fresnos, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Los Fresnos, Texas, with an average temperature varying between 78.6°F (25.9°C) and 90.3°F (32.4°C).

Temperature

The arrival of September coincides with an average high-temperature of a still tropical 90.3°F (32.4°C), indicating a minimal shift from August's 94.1°F (34.5°C). Los Fresnos records an average low of 78.6°F (25.9°C) throughout the nights in September.

Heat index

In September, the average heat index is evaluated at a scorching 105.8°F (41°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Heat index's context suggests values are appropriate for shady areas and slight breezes. 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 'apparent temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be swayed 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 hold great significance to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In Los Fresnos, the average relative humidity in September is 69%.

Rainfall

September is the month with the most rainfall in Los Fresnos. Rain falls for 17.6 days and accumulates 2.6" (66mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

In Los Fresnos, 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 7:49 pm. On the last day of September, in Los Fresnos, sunrise is at 7:22 am and sunset at 7:17 pm CDT.

Sunshine

The average sunshine in September in Los Fresnos is 8.6h.

UV index

In September, the average daily maximum UV index in Los Fresnos is 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Deter overexposure. Protecting against the sun's effects is essential. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

How hot is it in Los Fresnos in September?

The high-temperature, in September, in Los Fresnos, records 90.3°F (32.4°C), while the low-temperature is 78.6°F (25.9°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in September is evaluated at 105.8°F (41°C).

What is the average humidity in September in Los Fresnos?

The average relative humidity in September in Los Fresnos, Texas, is 69%.

What is the rainiest month in Los Fresnos?

September is the month with the most rainfall in Los Fresnos, Texas. Rain falls for 17.6 days and accumulates 2.6" (66mm) of precipitation.

How much does it rain in Los Fresnos in September?

In Los Fresnos, Texas, in September, it is raining for 17.6 days, with typically 2.6" (66mm) of accumulated precipitation.

When it does not snow in Los Fresnos?

In Los Fresnos, snow does not fall in January, March through December.

What is the average length of the day in September in Los Fresnos?

In Los Fresnos, the average day length in September is 12h and 18min.

When is the sunrise / sunset in September in Los Fresnos?

In September, on the first day of the month, sunrise is at 7:10 am and sunset at 7:49 pm. On the last day of the month, in Los Fresnos, Texas, sunrise is at 7:22 am and sunset at 7:17 pm CDT.

How many hours of sunshine does Los Fresnos have in September?

The average sunshine duration in September is 8.6h.

What is the UV index reading in September in Los Fresnos?

The average daily maximum UV index in September in Los Fresnos, Texas, is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Los Fresnos, TX

Average temperature in September - Los Fresnos, TX
  • Average high temperature in September: 90.3°F

The warmest month (with the highest average high temperature) is August (94.1°F).
The month with the lowest average high temperature is January (68.7°F).

  • Average low temperature in September: 78.6°F

The month with the highest average low temperature is August (80.2°F).
The coldest month (with the lowest average low temperature) is January (56.5°F).

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Average pressure in September
Los Fresnos, TX

Average pressure in September - Los Fresnos, TX
  • Average pressure in September: 29.91"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).

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Average wind speed in September
Los Fresnos, TX

Average wind speed in September - Los Fresnos, TX
  • Average wind speed in September: 8.9mph

The windiest months (with the highest average wind speed) are March and April (12.3mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).

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Average humidity in September
Los Fresnos, TX

Average humidity in September - Los Fresnos, TX
  • Average humidity in September: 69%

The month with the highest relative humidity is December (74%).
The month with the lowest relative humidity is August (66%).

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Average rainfall in September
Los Fresnos, TX

Average rainfall in September - Los Fresnos, TX
  • Average rainfall in September: 2.6"

The wettest month (with the highest rainfall) is September (2.6").
The driest month (with the least rainfall) is February (0.59").

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Average rainfall days in September
Los Fresnos, TX

Average rainfall days in September - Los Fresnos, TX
  • Average rainfall days in September: 17.6 days

The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is July (8.5 days).

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Average snowfall days in September
Los Fresnos, TX

Average snowfall days in September - Los Fresnos, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in September /
Average sunshine in September
Los Fresnos, TX

Average daylight in September / Average sunshine in September - Los Fresnos, TX
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

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Average sunshine days in September
Los Fresnos, TX

Average sunshine days in September - Los Fresnos, TX
  • Average sunshine days in September: 9.9 days

The month with the most sunshine days is May (20 days).
The month with the least sunshine days is September (9.9 days).

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Average UV index in September
Los Fresnos, TX

Average UV index in September - Los Fresnos, 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
Los Fresnos, TX

Average cloud cover in September - Los Fresnos, TX
  • Average cloud cover in September: 31

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in September
Los Fresnos, TX

Average visibility in September - Los Fresnos, 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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Los Fresnos, Texas, USA

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