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 is marked by a subtle drop in average high-temperatures, transitioning from a tropical 93.7°F (34.3°C) in August to a still hot 88°F (31.1°C). An average low-temperature of 72.1°F (22.3°C) is observed during September nights.Heat index
The heat index in September is evaluated at a scorching 104°F (40°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
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 variations, being pregnant, and physical activity can impact an individual's weather perception. 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 essentially critical for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In September, the average relative humidity is 76%.Rainfall
September is the month with the most rainfall. Rain falls for 19.7 days and accumulates 4.49" (114mm) of precipitation.Snowfall
March through November are months without snowfall.Daylight
The average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 7:00 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:08 pm CDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
What is the wettest month?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
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
Sugar Land, TX
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is August (93.7°F).
The month with the lowest average high temperature is January (61.3°F).
- Average low temperature in September: 72.1°F
The month with the highest average low temperature is August (76.5°F).
The coldest month (with the lowest average low temperature) is January (45.9°F).
Average pressure in September
Sugar Land, 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
Sugar Land, TX
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in September
Sugar Land, TX
- Average humidity in September: 76%
The months with the highest relative humidity are February and March (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Sugar Land, TX
- Average rainfall in September: 4.49"
The wettest month (with the highest rainfall) is September (4.49").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days in September
Sugar Land, TX
- Average rainfall days in September: 19.7 days
The month with the highest number of rainy days is September (19.7 days).
The month with the least rainy days is January (11.4 days).
Average snowfall in September
Sugar Land, TX
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Sugar Land, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Sugar Land, TX
- Average daylight in September: 12h and 2min
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 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Sugar Land, TX
- Average sunshine days in September: 8.1 days
The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is September (8.1 days).
Average UV index in September
Sugar Land, 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
Sugar Land, TX
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are August and October (Cloud cover 29).
Average visibility in September
Sugar Land, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Sugar Land, Texas, USA
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