September weather forecast and climate
Brierfield, AL

September, the first month of the autumn, in Brierfield, is also a moderately hot month, with average temperature fluctuating between 65.7°F (18.7°C) and 85.5°F (29.7°C).

Temperature

In September, the average high-temperature is practically the same as in August - a warm 85.5°F (29.7°C). In Brierfield, in September, the average low-temperature is 65.7°F (18.7°C).

Heat index

The average heat index in September is estimated at a very hot 95°F (35°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', 'feels like', 'apparent temperature', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, differences in body mass, height, and shape, pregnancy). 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. 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 is 73%.

Rainfall

Months with the least rainfall are September and October Rain falls for 11.9 days and accumulates 1.26" (32mm) of rain.

Snowfall

March through November are months without snowfall in Brierfield.

Daylight

In Brierfield, the average length of the day is 12.4h.

Sunshine

In Brierfield, the average sunshine in September is 9h.

UV index

In Brierfield, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Brierfield?

The average high-temperature, in September, in Brierfield, is 85.5°F (29.7°C), while the average low-temperature is 65.7°F (18.7°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that factores the actual air temperature with the relative humidity, in September is evaluated at 95°F (35°C).

What is the average humidity in September in Brierfield?

In September, the average relative humidity in Brierfield is 73%.

How much does it rain in Brierfield in September?

In September, in Brierfield, Alabama, the rain falls for 11.9 days. Throughout September, 1.26" (32mm) of precipitation is accumulated.

What is the driest month in Brierfield?

Months with the least rainfall in Brierfield, Alabama, are September and October Rain falls for 11.9 days and accumulates 1.26" (32mm) of rain.

When it does not snow in Brierfield?

In Brierfield snow does not fall in March through November.

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

In Brierfield, the average length of the day in September is 12.4h.

How many hours of sunshine does Brierfield have in September?

In Brierfield, Alabama, the average sunshine in September is 9h.

How high is the UV index in September in Brierfield?

In Brierfield, Alabama, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in September - Brierfield, AL
  • Average high temperature in September: 85.5°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 (51.4°F).

  • Average low temperature in September: 65.7°F

The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (36.3°F).

Average pressure in September - Brierfield, AL
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is January (30.17").
Months with the lowest atmospheric pressure are June and August (29.98").

Average wind speed in September - Brierfield, AL
  • Average wind speed in September: 5mph

The windiest months (with the highest average wind speed) are January, February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).

Average humidity in September - Brierfield, 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 - Brierfield, AL
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is August (2.52").
The driest months (with the least rainfall) are September and October (1.26").

Average rainfall days in September - Brierfield, AL
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (6.7 days).

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

The month with the highest snowfall is December (0.47").
Months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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

The month with the highest number of snowfall days is January (1 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 - Brierfield, AL
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 9h

Months with the most sunshine are June and July (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 4.9).

Average sunshine days in September - Brierfield, AL
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (21.9 days).
The month with the least sunshine days is July (9 days).

Average UV index in September - Brierfield, AL
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February and December (UV index 3).

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

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in September - Brierfield, AL
  • Average visibility in September: 6mi

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