September weather forecast and climate
Mountain Acres, AL

Weather in September

September, the first month of the autumn, in Mountain Acres, is also a moderately hot month, with temperature in the range of an average high of 82.9°F (28.3°C) and an average low of 62.6°F (17°C).

Temperature

In Mountain Acres, the average high-temperature is relatively the same as in August - a warm 82.9°F (28.3°C). In September, the average low-temperature is 62.6°F (17°C).

Heat index

The average heat index is estimated at a tropical 89.6°F (32°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, wind, differences in body mass, height, and shape, and clothing affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Mountain Acres, Alabama, in September, during 14.2 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. In Mountain Acres, during the entire year, the rain falls for 181.2 days and collects up to 41.06" (1043mm) of precipitation.

Snowfall

In Mountain Acres snow does not fall in April through October.

Daylight

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

Sunshine

In September, the average sunshine is 8.5h.

UV index

The average daily maximum UV index in Mountain Acres is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Mountain Acres?

In Mountain Acres, in September, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 62.6°F (17°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is evaluated at 89.6°F (32°C).

What is the average humidity in September in Mountain Acres?

The average relative humidity in September is 75%.

How much does it rain in Mountain Acres in September?

In September, in Mountain Acres, the rain falls for 14.2 days. Throughout September, 2.72" (69mm) of precipitation is accumulated.

When it does not snow in Mountain Acres?

April through October are months without snowfall in Mountain Acres, Alabama.

What is the average length of the day in September in Mountain Acres?

In Mountain Acres, Alabama, the average length of the day in September is 12.4h.

How long on average sun shines in September in Mountain Acres?

The average sunshine in September is 8.5h.

How high is the UV index in September in Mountain Acres?

In Mountain Acres, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Mountain Acres, AL

Average temperature in September - Mountain Acres, AL
  • Average high temperature in September: 82.9°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (48.9°F).

  • Average low temperature in September: 62.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

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Average pressure in September
Mountain Acres, AL

Average pressure in September - Mountain Acres, AL
  • Average pressure in September: 30.02"

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

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Average wind speed in September
Mountain Acres, AL

Average wind speed in September - Mountain Acres, AL
  • Average wind speed in September: 4.5mph

The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in September
Mountain Acres, AL

Average humidity in September - Mountain Acres, AL
  • Average humidity in September: 75%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in September
Mountain Acres, AL

Average rainfall in September - Mountain Acres, AL
  • Average rainfall in September: 2.72"

The wettest months (with the highest rainfall) are February and December (4.06").
The driest month (with the least rainfall) is October (2.56").

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Average rainfall days in September
Mountain Acres, AL

Average rainfall days in September - Mountain Acres, AL
  • Average rainfall days in September: 14.2 days

The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is November (9.8 days).

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Average snowfall in September
Mountain Acres, AL

Average snowfall in September - Mountain Acres, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.79").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Mountain Acres, AL

Average snowfall days in September - Mountain Acres, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Mountain Acres, AL

Average daylight in September / Average sunshine in September - Mountain Acres, 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: 9.9h).

  • Average sunshine in September: 8.5h

Months with the most sunshine are June and July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in September
Mountain Acres, AL

Average sunshine days in September - Mountain Acres, AL
  • Average sunshine days in September: 13.4 days

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is July (8 days).

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Average UV index in September
Mountain Acres, AL

Average UV index in September - Mountain Acres, 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 and December (UV index 2).

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Average cloud cover in September
Mountain Acres, AL

Average cloud cover in September - Mountain Acres, AL
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in September
Mountain Acres, AL

Average visibility in September - Mountain Acres, AL
  • Average visibility in September: 6mi

Months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January and December (5mi).

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