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 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 signifies a gentle decline in Marion's average high-temperature, easing from a torrid 96.3°F (35.7°C) in August to a tropical 88.3°F (31.3°C). An average low-temperature of 70.7°F (21.5°C) is observed during September nights.Heat index
For September, the heat index is computed to be a sweltering 100.4°F (38°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In Marion, the average relative humidity in September is 69%.Rainfall
In Marion, in September, during 12.1 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In Marion, during the entire year, the rain falls for 93.3 days and collects up to 7.95" (202mm) of precipitation.Snowfall
April through December are months without snowfall in Marion, Texas.Daylight
In September, the average length of the day is 12h and 20min.On the first day of September in Marion, sunrise is at 7:10 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:18 pm CDT.
Sunshine
In Marion, Texas, the average sunshine in September is 8.4h.UV index
In Marion, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 6 during September translates into the following guidance:
Eschew overexposure. Those with light skin may suffer burns in fewer than 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. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
How hot is September in Marion?
What is the average humidity in September in Marion?
How many days does it rain in September in Marion?
When it does not snow in Marion?
How many hours of daylight does Marion have in September?
When are sunrise and sunset in September in Marion?
How many hours of sunshine does Marion have in September?
How high is the UV index in September in Marion?
Average temperature in September
Marion, TX
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is August (96.3°F).
The month with the lowest average high temperature is January (60.3°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (43.7°F).
Average pressure in September
Marion, TX
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Marion, TX
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is February (8.9mph).
The calmest month (with the lowest average wind speed) is September (6.1mph).
Average humidity in September
Marion, TX
- Average humidity in September: 69%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Marion, TX
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is May (1.38").
The driest month (with the least rainfall) is February (0.2").
Average rainfall days in September
Marion, TX
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is September (12.1 days).
The month with the least rainy days is January (4.9 days).
Average snowfall days in September
Marion, 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 April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Marion, 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 July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Marion, TX
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is September (15.3 days).
Average UV index in September
Marion, 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
Marion, TX
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Marion, 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).
Marion, Texas, USA
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