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 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
A mild drop in Lake Dallas's average high-temperature is observed in September, transitioning from a torrid 96.3°F (35.7°C) in August to a hot 88°F (31.1°C). In Lake Dallas, the September nights cool down to an average low of 70.7°F (21.5°C).Heat index
In September, the average heat index is computed to be a sweltering 95°F (35°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.Be aware that heat index ratings are designed for shaded locations and minor breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', determines the feeling of heat when you account for the relative humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. 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 are especially vital to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
The average relative humidity in September is 61%.Rainfall
In Lake Dallas, Texas, in September, it is raining for 14 days, with typically 2.64" (67mm) of accumulated precipitation. Throughout the year, there are 132.1 rainfall days, and 29.09" (739mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Lake Dallas.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:13 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Lake Dallas, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 6 in September suggests the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Lake Dallas?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in Lake Dallas?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Lake Dallas, TX
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is August (96.3°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Lake Dallas, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Lake Dallas, TX
- Average wind speed in September: 6.8mph
The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Lake Dallas, TX
- Average humidity in September: 61%
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (53%).
Average rainfall in September
Lake Dallas, TX
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is October (3.74").
The driest months (with the least rainfall) are January and February (1.57").
Average rainfall days in September
Lake Dallas, TX
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Lake Dallas, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Lake Dallas, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Lake Dallas, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 3min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Lake Dallas, TX
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is September (14.9 days).
Average UV index in September
Lake Dallas, 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
Lake Dallas, TX
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Lake Dallas, 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).
Lake Dallas, Texas, USA
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