September weather forecast and climate
Bessemer, AL

Weather in September

The first month of the autumn, September, is still a warm month in Bessemer, Alabama, with average temperature varying between 85.5°F (29.7°C) and 66°F (18.9°C).

Temperature

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

Heat index

In September, the average heat index is estimated at a hot 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 the 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', 'felt air temperature', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, wind, metabolic differences). Bear in mind that direct sunshine exposure increases weather impact, and may raise 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 September, the average relative humidity in Bessemer is 71%.

Rainfall

In Bessemer, Alabama, during September, the rain falls for 14.3 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Bessemer, Alabama, during the entire year, the rain falls for 172.1 days and collects up to 39.69" (1008mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in Bessemer is 12.4h.

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 in Bessemer. A UV Index value of 6 to 7 symbolizes a high threat to health from the 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. Protection against sun damage is needed. 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. 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.
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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). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that takes the relative humidity and factores it into the air temperature reading, is calculated to 94.1°F (34.5°C).

What is the average humidity in September in Bessemer?

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

How many days does it rain in September in Bessemer?

In Bessemer, during September, the rain falls for 14.3 days and regularly aggregates up to 2.44" (62mm) of precipitation.

When it does not snow in Bessemer?

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

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

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

How many hours of sunshine does Bessemer have in September?

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

What are the months with the highest UV index in Bessemer?

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

What is the UV index intensity in September in Bessemer?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to the Sun's UV rays.

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"

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

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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").
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).
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: 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: 8.9h

Months with the most sunshine are June and July (Average sunshine: 10.5h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

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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

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

Months with the most cloud cover are February and December (Cloud cover 48).
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

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).

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