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
Southlake records a mild change in average high-temperature during September, easing from a sweltering 96.4°F (35.8°C) in August to a hot 87.8°F (31°C). Throughout September, the temperature in Southlake tends to fall to a consistent average low of 70.7°F (21.5°C).Heat index
September's mean heat index is appraised at a sweltering 95°F (35°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Heat index readings emphasize conditions of light breezes and shaded spots. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
In September, the average relative humidity in Southlake is 62%.Rainfall
In September, in Southlake, the rain falls for 10.5 days. Throughout September, 0.55" (14mm) of precipitation is accumulated. Throughout the year, in Southlake, there are 97.8 rainfall days, and 9.29" (236mm) of precipitation is accumulated.Snowfall
In Southlake, snow does not fall in April through December.Daylight
The average length of the day in September in Southlake, Texas, is 12h and 22min.On the first day of September, sunrise is at 7:03 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:13 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. 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. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
How hot does it get in Southlake in September?
What is the average humidity in September in Southlake?
How much does it rain in Southlake in September?
When it does not snow in Southlake?
How many hours of daylight does Southlake have in September?
What time are sunrise and sunset in September in Southlake?
How long on average sun shines in September in Southlake?
What is the UV index intensity in September in Southlake?
Average temperature in September
Southlake, TX
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (54.5°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in September
Southlake, 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
Southlake, TX
- Average wind speed in September: 6.7mph
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 (6.7mph).
Average humidity in September
Southlake, TX
- Average humidity in September: 62%
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (54%).
Average rainfall in September
Southlake, TX
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is February (0.39").
Average rainfall days in September
Southlake, TX
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is September (10.5 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Southlake, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Southlake, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.9 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
Southlake, 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 month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Southlake, TX
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is January (25.1 days).
The month with the least sunshine days is September (16.8 days).
Average UV index in September
Southlake, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Southlake, TX
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Southlake, 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).
Southlake, Texas, USA
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