September weather forecast and climate
Brompton, AL

September, the first month of the autumn, in Brompton, is also a moderately hot month, with temperature in the range of an average high of 84.7°F (29.3°C) and an average low of 64.8°F (18.2°C).

Temperature

In Brompton, the average high-temperature in September is relatively the same as in August - a warm 84.7°F (29.3°C). The average low-temperature, in September, is 64.8°F (18.2°C).

Heat index

In September, the average heat index is evaluated at a tropical 93.2°F (34°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, wind, differences in body mass, height, and shape, and clothing affect individual temperature impact. 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 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.

Humidity

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

Rainfall

September and October are months with the least rain in Brompton when the rain falls for 13 days and typically aggregates up to 1.57" (40mm) of rain.

Snowfall

March through October are months without snowfall in Brompton.

Daylight

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

Sunshine

In Brompton, Alabama, the average sunshine in September is 8.7h.

UV index

In September, the average daily maximum UV index in Brompton is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Brompton?

In Brompton, Alabama, in September, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 64.8°F (18.2°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that takes the relative humidity and factores it into the air temperature reading, is calculated to 93.2°F (34°C).

What is the average humidity in September in Brompton?

The average relative humidity in September in Brompton is 73%.

How many days does it rain in September in Brompton?

In Brompton, in September, it is raining for 13 days, with typically 1.57" (40mm) of accumulated precipitation.

What is the driest month in Brompton?

Months with the least rainfall are September and October Rain falls for 13 days and accumulates 1.57" (40mm) of rain.

When it does not snow in Brompton?

March through October are months without snowfall in Brompton, Alabama.

How many hours of daylight does Brompton have in September?

The average length of the day in September in Brompton, Alabama, is 12.4h.

How long on average sun shines in September in Brompton?

The average sunshine in September in Brompton, Alabama, is 8.7h.

How high is the UV index in September in Brompton?

The average daily maximum UV index in September in Brompton, Alabama, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.
Average temperature in September - Brompton, AL
  • Average high temperature in September: 84.7°F

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (50.7°F).

  • Average low temperature in September: 64.8°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

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

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

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

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

Average humidity in September - Brompton, 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 (72%).

Average rainfall in September - Brompton, AL
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is August (2.99").
The driest months (with the least rainfall) are September and October (1.57").

Average rainfall days in September - Brompton, AL
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (8.1 days).

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

The month with the highest snowfall is January (0.63").
Months with the least snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in September - Brompton, 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).

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

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

  • Average sunshine in September: 8.7h

Months with the most sunshine are June and July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.7h).

Average sunshine days in September - Brompton, AL
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (9.3 days).

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

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

Average cloud cover in September - Brompton, AL
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 49).
Months with the least cloud cover are June, September and October (Cloud cover 31).

Average visibility in September - Brompton, 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).