Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's presence marks an average high-temperature of a still hot 90.3°F (32.4°C), subtly varied from August's 94.1°F (34.5°C). Throughout September, the average low-temperature in Los Fresnos dips to a moderately hot 78.6°F (25.9°C).Heat index
Throughout September, the heat index is computed to be a blistering 105.8°F (41°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.Heat index's context suggests values are appropriate for shady areas and slight breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In Los Fresnos, the average relative humidity in September is 69%.Rainfall
The month with the most rainfall is September, when the rain falls for 17.6 days and typically aggregates up to 2.6" (66mm) of precipitation.Snowfall
In Los Fresnos, snow does not fall in January, March through December.Daylight
In Los Fresnos, Texas, the average length of the day in September is 12h and 18min.On the first day of September, sunrise is at 7:10 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:17 pm CDT.
Sunshine
In Los Fresnos, the average sunshine in September is 8.6h.UV index
In Los Fresnos, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 7 in September suggests the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
What is the wettest month?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Los Fresnos have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September in Los Fresnos?
How high is the UV index in September?
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).
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).
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).
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%).
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").
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).
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).
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).
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).
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).
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).
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).
Los Fresnos, Texas, USA
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