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 an average high-temperature of a moderately hot 84.6°F (29.2°C), almost identical to the preceding month. In Houston, the expected average low-temperature for September is an enjoyable 65.1°F (18.4°C).Heat index
The heat index for September is evaluated at a hot 93.2°F (34°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
In September, the average relative humidity in Houston is 73%.Rainfall
In Houston, Alabama, during September, the rain falls for 14.7 days and regularly aggregates up to 2.76" (70mm) of precipitation. In Houston, during the entire year, the rain falls for 184.2 days and collects up to 43.78" (1112mm) of precipitation.Snowfall
In Houston, snow does not fall in April through October.Daylight
In Houston, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:14 pm. On the last day of September, in Houston, sunrise is at 6:43 am and sunset at 6:34 pm CDT.
Sunshine
In September, the average sunshine in Houston is 8.8h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 6 during September leads to these advisories:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
Is it hot in Houston during September?
What is the average humidity in September in Houston?
How much does it rain in Houston in September?
When it does not snow in Houston?
How many hours of daylight does Houston have in September?
When are sunrise and sunset in September in Houston?
How many hours of sunshine does Houston have in September?
What is the UV index intensity in September in Houston?
Average temperature in September
Houston, AL
- Average high temperature in September: 84.6°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (50.4°F).
- Average low temperature in September: 65.1°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (34.7°F).
Average pressure in September
Houston, AL
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Houston, AL
- Average wind speed in September: 5.1mph
The windiest months (with the highest average wind speed) are February, March and April (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Houston, AL
- Average humidity in September: 73%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Houston, AL
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is December (4.45").
The driest month (with the least rainfall) is November (2.48").
Average rainfall days in September
Houston, AL
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in September
Houston, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Houston, AL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.6 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
Houston, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Houston, AL
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in September
Houston, AL
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Houston, AL
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in September
Houston, AL
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Houston, Alabama, USA
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