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
Houston greets September with an average high-temperature of a warm 85.3°F (29.6°C), marking a slight deviation from the preceding month. Houston throughout September, experiences an average nighttime temperature of 65.3°F (18.5°C).Heat index
Throughout September, the heat index is evaluated at a very hot 95°F (35°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
The average relative humidity in September is 72%.Rainfall
In September, in Houston, the rain falls for 11.6 days. Throughout September, 2.01" (51mm) of precipitation is accumulated. In Houston, during the entire year, the rain falls for 156.8 days and collects up to 32.01" (813mm) of precipitation.Snowfall
April through October are months without snowfall in Houston, Mississippi.Daylight
In September, the average length of the day in Houston, Mississippi, is 12h and 22min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:21 pm. On the last day of September, in Houston, sunrise is at 6:50 am and sunset at 6:41 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The UV index of 5 during September translates into the following guidance:
Exercise caution. Those with pale skin may experience burns in less than half an hour. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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?
What is the average length of the day in September in Houston?
What time 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, MS
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in September: 65.3°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).
Average pressure in September
Houston, MS
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Houston, MS
- Average wind speed in September: 5.4mph
The windiest months (with the highest average wind speed) are February and April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Houston, MS
- Average humidity in September: 72%
The months with the highest relative humidity are February, March and December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Houston, MS
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in September
Houston, MS
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in September
Houston, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Houston, MS
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.5 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, MS
- 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: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in September
Houston, MS
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Houston, MS
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Houston, MS
- Average cloud cover in September: 29
The months with the most cloud cover are February and December (Cloud cover 49).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in September
Houston, MS
- 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).
Houston, Mississippi, USA
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