September weather forecast
Bessemer, AL

Weather in September

September, the first month of the autumn in Bessemer, is also a moderately hot month, with an average temperature varying between 85.5°F (29.7°C) and 66°F (18.9°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a moderately hot 85.5°F (29.7°C). In September, in Bessemer, the average low-temperature is 66°F (18.9°C).

Heat index

In September, the average heat index is evaluated at a tropical 94.1°F (34.5°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. With exposure to direct sunlight, the heat index may be increased 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', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like metabolic differences, clothing, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.

Humidity

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

Rainfall

In September, in Bessemer, the rain falls for 14.3 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. Throughout the year, in Bessemer, there are 172.1 rainfall days, and 39.69" (1008mm) of precipitation is accumulated.

Snowfall

In Bessemer, snow does not fall in April through October.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of September, sunrise is at 6:22 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:33 pm CDT.

Sunshine

In Bessemer, the average sunshine in September is 8.9h.

UV index

April through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Bessemer?

The average high-temperature, in September, in Bessemer, Alabama, is 85.5°F (29.7°C), while the average low-temperature is 66°F (18.9°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is evaluated at 94.1°F (34.5°C).

What is the average humidity in September in Bessemer?

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

How many days does it rain in September in Bessemer?

In September, in Bessemer, Alabama, the rain falls for 14.3 days. Throughout September, 2.44" (62mm) of precipitation is accumulated.

When it does not snow in Bessemer?

April through October are months without snowfall in Bessemer.

How many hours of daylight does Bessemer have in September?

In Bessemer, Alabama, the average day length in September is 12h and 22min.

When is the sunrise / sunset in September in Bessemer?

On the first day of September in Bessemer, sunrise is at 6:22 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:33 pm CDT.

How long on average sun shines in September in Bessemer?

The average sunshine duration in September in Bessemer is 8.9h.

When is the highest UV index in Bessemer?

The months with the highest UV index in Bessemer are April through September, with an average maximum UV index of 6.

How high is the UV index in September in Bessemer?

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

Average temperature in September
Bessemer, AL

Average temperature in September - Bessemer, AL
  • Average high temperature in September: 85.5°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (51.3°F).

  • Average low temperature in September: 66°F

The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (36°F).

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Average pressure in September
Bessemer, AL

Average pressure in September - Bessemer, AL
  • Average pressure in September: 30.01"Hg

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

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Average wind speed in September
Bessemer, AL

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

The windiest months (with the highest average wind speed) are February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in September
Bessemer, AL

Average humidity in September - Bessemer, 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 (70%).

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Average rainfall in September
Bessemer, AL

Average rainfall in September - Bessemer, AL
  • Average rainfall in September: 2.44"

The wettest month (with the highest rainfall) is December (4.13").
The driest month (with the least rainfall) is October (2.24").

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Average rainfall days in September
Bessemer, AL

Average rainfall days in September - Bessemer, AL
  • Average rainfall days in September: 14.3 days

The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (8.6 days).

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Average snowfall in September
Bessemer, AL

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

The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Bessemer, AL

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

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Bessemer, AL

Average daylight in September / Average sunshine in September - Bessemer, AL
  • Average daylight in September: 12h and 22min

The month with the longest days is June (Average daylight: 14h and 20min).
The month with the shortest days is December (Average daylight: 9h and 59min).

  • Average sunshine in September: 8h and 54min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days in September
Bessemer, AL

Average sunshine days in September - Bessemer, AL
  • Average sunshine days in September: 13.4 days

The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is July (8.3 days).

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Average UV index in September
Bessemer, AL

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

The months with the highest UV index are April, May, June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Bessemer, AL

Average cloud cover in September - Bessemer, AL
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 48).
The months with the least cloud cover are June, September and October (Cloud cover 30).

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Average visibility in September
Bessemer, AL

Average visibility in September - Bessemer, 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).

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