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
September in Garland sees a slight reduction in average high-temperature, with a shift from a very hot 95.5°F (35.3°C) in August to a hot 87.6°F (30.9°C). Throughout September nights, Garland experiences a consistent temperature average of 69.8°F (21°C).Heat index
For September, the heat index is computed to be a fiery hot 96.8°F (36°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. 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. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
In Garland, the average relative humidity in September is 64%.Rainfall
In Garland, in September, it is raining for 13.8 days, with typically 1.77" (45mm) of accumulated precipitation. Throughout the year, there are 122 rainfall days, and 17.48" (444mm) of precipitation is accumulated.Snowfall
In Garland, snow does not fall in March through December.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 7:01 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:12 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Garland, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 6 in September translates into this advice:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Garland have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Garland, TX
- Average high temperature in September: 87.6°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 69.8°F
The month with the highest average low temperature is July (76.1°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in September
Garland, 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
Garland, TX
- Average wind speed in September: 6.7mph
The windiest months (with the highest average wind speed) are March and April (9.8mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).
Average humidity in September
Garland, TX
- Average humidity in September: 64%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Garland, TX
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is May (2.32").
The driest months (with the least rainfall) are February and November (0.71").
Average rainfall days in September
Garland, TX
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is September (13.8 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in September
Garland, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Garland, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Garland, 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 4min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Garland, TX
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is September (13.8 days).
Average UV index in September
Garland, 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
Garland, TX
- Average cloud cover in September: 28
The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Garland, 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).
Garland, Texas, USA
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