September weather forecastWylie, TX
September
Weather in September
September, the first month of the autumn in Wylie, is still a tropical month, with temperature in the range of an average high of 87.1°F (30.6°C) and an average low of 69.1°F (20.6°C).Temperature
The onset of September brings a small shift in high-temperatures, falling from a sweltering 95°F (35°C) in August to a hot 87.1°F (30.6°C). During the nights in September, Wylie experiences a consistent average temperature of 69.1°F (20.6°C).Heat index
The heat index for September is computed to be a sweltering 95°F (35°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. 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.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
In Wylie, the average relative humidity in September is 65%.Rainfall
In Wylie, during September, the rain falls for 14.1 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Wylie, during the entire year, the rain falls for 124.3 days and collects up to 20.47" (520mm) of precipitation.Snowfall
In Wylie, snow does not fall in January, March through October.Daylight
The average length of the day in September in Wylie is 12h and 22min.On the first day of September, sunrise is at 7:01 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:11 pm CDT.
Sunshine
In Wylie, the average sunshine in September is 8.3h.UV index
In Wylie, Texas, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, the UV index of 6 transforms into the following advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Wylie, TX
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in September: 69.1°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Wylie, 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 (29.91"Hg).
Average wind speed in September
Wylie, TX
- Average wind speed in September: 6.8mph
The windiest months (with the highest average wind speed) are February, March and April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Wylie, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Wylie, TX
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days in September
Wylie, TX
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is September (14.1 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Wylie, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are January, March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Wylie, 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 March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Wylie, TX
- Average daylight in September: 12h and 24min
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 18min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Wylie, TX
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is September (14.8 days).
Average UV index in September
Wylie, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Wylie, TX
- Average cloud cover in September: 30
The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Wylie, 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).
