September weather forecast and climate
Fairnelson, AL

September, the first month of the autumn, in Fairnelson, is still a hot month, with average temperature ranging between max 87.4°F (30.8°C) and min 68°F (20°C).

Temperature

In Fairnelson, the average high-temperature is essentially the same as in August - a still hot 87.4°F (30.8°C). In Fairnelson, the average low-temperature is 68°F (20°C).

Heat index

In September, the average heat index is evaluated at a sweltering 101.5°F (38.6°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'felt air temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, differences in body mass, height, and shape, clothing). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In September, the average relative humidity in Fairnelson is 75%.

Rainfall

In Fairnelson, Alabama, it is raining for 16.6 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, there are 176.5 rainfall days, and 37.72" (958mm) of precipitation is accumulated.

Snowfall

In Fairnelson, Alabama, snow does not fall in April through November.

Daylight

In Fairnelson, the average length of the day is 12.3h.

Sunshine

In September, the average sunshine in Fairnelson is 8.8h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Fairnelson?

In Fairnelson, in September, the average high-temperature is 87.4°F (30.8°C), and the average low-temperature is 68°F (20°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that combines both air temperature and relative humidity, is calculated to 101.5°F (38.6°C).

What is the average humidity in September in Fairnelson?

The average relative humidity in September is 75%.

How much does it rain in Fairnelson in September?

In Fairnelson, Alabama, during September, the rain falls for 16.6 days and regularly aggregates up to 2.72" (69mm) of precipitation.

When it does not snow in Fairnelson?

In Fairnelson, Alabama, snow does not fall in April through November.

What is the average length of the day in September in Fairnelson?

The average length of the day in September in Fairnelson, Alabama, is 12.3h.

How long on average sun shines in September in Fairnelson?

In Fairnelson, Alabama, the average sunshine in September is 8.8h.

How high is the UV index in September in Fairnelson?

In September, the average daily maximum UV index in Fairnelson is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays.
Average temperature in September - Fairnelson, AL
  • Average high temperature in September: 87.4°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (57.6°F).

  • Average low temperature in September: 68°F

Months with the highest average low temperature are July and August (72.3°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).

Average pressure in September - Fairnelson, AL
  • Average pressure in September: 29.98"

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

Average wind speed in September - Fairnelson, AL
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is March (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).

Average humidity in September - Fairnelson, AL
  • Average humidity in September: 75%

Months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September - Fairnelson, AL
  • Average rainfall in September: 2.72"

The wettest month (with the highest rainfall) is August (4.72").
The driest month (with the least rainfall) is November (2.13").

Average rainfall days in September - Fairnelson, AL
  • Average rainfall days in September: 16.6 days

The month with the highest number of rainy days is July (23.9 days).
The month with the least rainy days is November (7.6 days).

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

The month with the highest snowfall is January (0.28").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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

The month with the highest number of snowfall days is January (0.5 days).
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 - Fairnelson, AL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is June (Average sunshine: 10.6h).
The month with the least sunshine is December (Average sunshine: 5h).

Average sunshine days in September - Fairnelson, AL
  • Average sunshine days in September: 11.4 days

The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (5.1 days).

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

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September - Fairnelson, AL
  • Average cloud cover in September: 33

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 30).

Average visibility in September - Fairnelson, AL
  • Average visibility in September: 5mi

Months with the highest visibility are June and October (6mi).
Months with the lowest visibility are January, February, March, April, May, July, August, September, November and December (5mi).