Birmingham
Alabama, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Birmingham, AL

The colorful evening sky in Birmingham City, Alabama
The colorful evening sky in Birmingham City, Alabama
September, the first month of the autumn, in Birmingham, is also a moderately hot month, with average temperature varying between 64.2°F (17.9°C) and 85.1°F (29.5°C).

Temperature

In September, the average high-temperature marginally drops, from a hot 90.7°F (32.6°C) in August, to a warm 85.1°F (29.5°C). The average low-temperature, in Birmingham, is 64.2°F (17.9°C).

Humidity

The average relative humidity in Birmingham is 74%.

Rainfall

In Birmingham, during September, the rain falls for 7.4 days and regularly aggregates up to 3.9" (99.1mm) of precipitation. Throughout the year, in Birmingham, there are 116.8 rainfall days, and 53.7" (1364.5mm) of precipitation is accumulated.

Snowfall

Throughout the year, 1.6" (40.5mm) of snow is accumulated.

Daylight

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

Sunshine

The average sunshine in September is 7.5h.

UV index

In Birmingham, the average daily maximum UV index is 8. A UV Index value of 8 to 10 symbolizes a very high threat to health from the exposure to the Sun's UV radiation for the average person.
The average daily UV index of 8 in September transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 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. 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 Birmingham?

The average high-temperature, in September, in Birmingham, Alabama, is 85.1°F (29.5°C), while the average low-temperature is 64.2°F (17.9°C).

What is the average humidity in September in Birmingham?

In Birmingham, Alabama, the average relative humidity in September is 74%.

How many days does it rain in September in Birmingham?

In September, the rain falls for 7.4 days. Throughout September, 3.9" (99.1mm) of precipitation is accumulated.

How many hours of daylight does Birmingham have in September?

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

How many hours of sunshine does Birmingham have in September?

In September, the average sunshine is 7.5h.

What is the UV index intensity in September in Birmingham?

The average daily maximum UV index in September in Birmingham, Alabama, is 8. A UV Index value of 8 to 10 symbolizes a very high health threat from the exposure to the Sun's UV rays.
Average temperature in September - Birmingham, AL
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is July (90.8°F).
The month with the lowest average high temperature is January (53.8°F).

  • Average low temperature in September: 64.3°F

The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).

Average humidity in September - Birmingham, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is August (74.6%).
The month with the lowest relative humidity is March (64.2%).

Average rainfall in September - Birmingham, AL
  • Average rainfall in September: 3.9"

The wettest month (with the highest rainfall) is March (5.2").
The driest month (with the lowest rainfall) is October (3.4").

Average rainfall days in September - Birmingham, AL
  • Average rainfall days in September: 7.4 days

The month with the highest number of rainy days is July (11.7 days).
The month with the lowest number of rainy days is September (7.4 days).

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

Months with the highest snowfall are January and March (0.6").
Months with the lowest snowfall are May, June, July, August, September, October and November (0").

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

The month with the highest number of snowfall days is January (0.3 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Birmingham, AL
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 7.5h

The month with most sunshine is June (Average sunshine: 9.4h).
The month with least sunshine is January (Average sunshine: 4.8h).

Average UV index in September - Birmingham, AL
  • Average UV index in September: 8

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).