September weather forecastHighlands, TX
September
Weather in September
The first month of the autumn, September, is also a hot month in Highlands, Texas, with an average temperature fluctuating between 73.8°F (23.2°C) and 87.8°F (31°C).Temperature
With September's advent, Highlands sees an average high-temperature of a still tropical 87.8°F (31°C), subtly shifted from August's 92.8°F (33.8°C). Highlands observes an average low-temperature of 73.8°F (23.2°C) during September.Heat index
The heat index value during September is appraised at a very hot 102.2°F (39°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Heat index determinations are made taking into account the shade and light air movements. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The average relative humidity in September is 75%.Rainfall
The month with the most rainfall is September, when the rain falls for 18.5 days and typically aggregates up to 4.92" (125mm) of precipitation.Snowfall
February through December are months without snowfall in Highlands, Texas.Daylight
The average length of the day in September is 12h and 20min.On the first day of September in Highlands, sunrise is at 6:57 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:06 pm CDT.
Sunshine
In September, the average sunshine in Highlands is 8.9h.UV index
In Highlands, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 6 in September translates into these instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Highlands, TX
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (92.8°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in September: 73.8°F
The month with the highest average low temperature is August (78.3°F).
The coldest month (with the lowest average low temperature) is January (46.6°F).
Average pressure in September
Highlands, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Highlands, TX
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).
Average humidity in September
Highlands, TX
- Average humidity in September: 75%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall in September
Highlands, TX
- Average rainfall in September: 4.92"
The wettest month (with the highest rainfall) is September (4.92").
The driest month (with the least rainfall) is February (1.89").
Average rainfall days in September
Highlands, TX
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is September (18.5 days).
The month with the least rainy days is November (12.5 days).
Average snowfall in September
Highlands, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Highlands, TX
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Highlands, TX
- Average daylight in September: 12h and 18min
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 54min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Highlands, TX
- Average sunshine days in September: 9 days
The month with the most sunshine days is October (16.6 days).
The month with the least sunshine days is September (9 days).
Average UV index in September
Highlands, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Highlands, TX
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Highlands, 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).
