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
In Sealy, the average high-temperature in September slightly decreases from 94.6°F (34.8°C) in August to a still tropical 88.3°F (31.3°C). September nights cool down to an average low-temperature of 71.4°F (21.9°C).Heat index
September's average heat index is computed to be a blistering 104°F (40°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.Note that heat index values are valued for light wind and location in the shade. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In Sealy, the average relative humidity in September is 75%.Rainfall
In September, the rain falls for 18.5 days. Throughout September, 3.62" (92mm) of precipitation is accumulated. In Sealy, during the entire year, the rain falls for 176.6 days and collects up to 32.2" (818mm) of precipitation.Snowfall
February through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:10 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Sealy have in September?
How high is the UV index in September?
Average temperature in September
Sealy, TX
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (60.8°F).
- Average low temperature in September: 71.4°F
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (44.6°F).
Average pressure in September
Sealy, 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
Sealy, TX
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in September
Sealy, TX
- Average humidity in September: 75%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Sealy, TX
- Average rainfall in September: 3.62"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days in September
Sealy, TX
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is September (18.5 days).
The month with the least rainy days is January (11.9 days).
Average snowfall in September
Sealy, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Sealy, TX
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, October and November (0 days).
Average daylight in September /
Average sunshine in September
Sealy, 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 3min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Sealy, TX
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in September
Sealy, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Sealy, TX
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Sealy, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, August, September, October, November and December (6mi).
The months with the lowest visibility are March, April, May, June and July (5mi).
Sealy, Texas, USA
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