September weather forecast
Marion, AL

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Weather in September

The first month of the autumn, September, is still a tropical month in Marion, Alabama, with an average temperature ranging between max 87.1°F (30.6°C) and min 67.1°F (19.5°C).

Temperature

Marion's entry into September measures an average high-temperature of a still hot 87.1°F (30.6°C), closely parallel to the preceding month. Throughout the month of September, Marion witnesses an average low-temperature of 67.1°F (19.5°C).

Heat index

The heat index for September is estimated at a very hot 98.6°F (37°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In Marion, the average relative humidity in September is 71%.

Rainfall

September is the month with the least rainfall. Rain falls for 13.4 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

March through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:13 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:34 pm CDT.

Sunshine

In Marion, the average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

An average high-temperature, in September, in Marion, is 87.1°F (30.6°C) and the average low-temperature is 67.1°F (19.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 98.6°F (37°C).

What is the average humidity in September?

In Marion, the average relative humidity in September is 71%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 13.4 days and typically collects 1.97" (50mm) of precipitation.

How many days does it rain in September?

In Marion, during September, the rain falls for 13.4 days and regularly aggregates up to 1.97" (50mm) of precipitation.

When it does not snow?

In Marion, snow does not fall in March through October.

How many hours of daylight does Marion have in September?

The average day length in September is 12h and 22min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:34 pm CDT.

How many hours of sunshine does Marion have in September?

The average sunshine duration in September is 9.2h.

How high is the UV index in September?

In Marion, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Marion, AL

Average temperature in September - Marion, AL
  • Average high temperature in September: 87.1°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (53.8°F).

  • Average low temperature in September: 67.1°F

The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).

Average pressure in September
Marion, AL

Average pressure in September - Marion, AL
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

Average wind speed in September
Marion, AL

Average wind speed in September - Marion, AL
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in September
Marion, AL

Average humidity in September - Marion, AL
  • Average humidity in September: 71%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).

Average rainfall in September
Marion, AL

Average rainfall in September - Marion, AL
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is April (3.94").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in September
Marion, AL

Average rainfall days in September - Marion, AL
  • Average rainfall days in September: 13.4 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.3 days).

Average snowfall in September
Marion, AL

Average snowfall in September - Marion, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.39").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in September
Marion, AL

Average snowfall days in September - Marion, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.1 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
Marion, AL

Average daylight in September / Average sunshine in September - Marion, AL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 9h and 1min

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: 5h and 0min).

Average sunshine days in September
Marion, AL

Average sunshine days in September - Marion, AL
  • Average sunshine days in September: 14.1 days

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (8.1 days).

Average UV index in September
Marion, AL

Average UV index in September - Marion, AL
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
Marion, AL

Average cloud cover in September - Marion, AL
  • Average cloud cover in September: 29

The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are September and October (Cloud cover 29).

Average visibility in September
Marion, AL

Average visibility in September - Marion, AL
  • 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, Alabama, USA

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