September weather forecast and climate
Alpine Bay, AL

September, the first month of the autumn, in Alpine Bay, is still a warm month, with average temperature fluctuating between 65.1°F (18.4°C) and 84.7°F (29.3°C).

Temperature

In Alpine Bay, the average high-temperature is almost the same as in August - a warm 84.7°F (29.3°C). In September, the average low-temperature is 65.1°F (18.4°C).

Heat index

In September, the average heat index is appraised at a hot 93.6°F (34.2°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. 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 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, clothing, 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 Alpine Bay, Alabama, the average relative humidity is 74%.

Rainfall

In Alpine Bay, Alabama, in September, during 14 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, in Alpine Bay, there are 177.1 rainfall days, and 41.06" (1043mm) of precipitation is accumulated.

Snowfall

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

Daylight

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

Sunshine

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

UV index

The average daily maximum UV index in Alpine Bay is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 5 in September transform into the following instructions:
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. 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.

What is the temperature in September in Alpine Bay?

The average high-temperature, in September, in Alpine Bay, is 84.7°F (29.3°C), while the average low-temperature is 65.1°F (18.4°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in September is appraised at 93.6°F (34.2°C).

What is the average humidity in September in Alpine Bay?

The average relative humidity in September in Alpine Bay is 74%.

How many days does it rain in September in Alpine Bay?

In Alpine Bay, in September, it is raining for 14 days, with typically 2.52" (64mm) of accumulated precipitation.

When it does not snow in Alpine Bay?

April through October are months without snowfall in Alpine Bay.

How many hours of daylight does Alpine Bay have in September?

In Alpine Bay, Alabama, the average length of the day in September is 12.4h.

How many hours of sunshine does Alpine Bay have in September?

In September, the average sunshine in Alpine Bay is 8.7h.

What is the UV index intensity in September in Alpine Bay?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in September - Alpine Bay, AL
  • Average high temperature in September: 84.7°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.9°F).

  • Average low temperature in September: 65.1°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

Average pressure in September - Alpine Bay, 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 - Alpine Bay, 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 (4.2mph).

Average humidity in September - Alpine Bay, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September - Alpine Bay, AL
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is October (2.28").

Average rainfall days in September - Alpine Bay, AL
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is July (21.7 days).
The month with the least rainy days is November (8.4 days).

Average snowfall in September - Alpine Bay, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.83").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September - Alpine Bay, AL
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and 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 - Alpine Bay, 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: 8.7h

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

Average sunshine days in September - Alpine Bay, AL
  • Average sunshine days in September: 13.5 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is July (6.9 days).

Average UV index in September - Alpine Bay, AL
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in September - Alpine Bay, AL
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 48).
Months with the least cloud cover are June, September and October (Cloud cover 31).

Average visibility in September - Alpine Bay, 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).