September weather forecast and climate
Glen Mary, AL

Weather in September

The first month of the autumn, September, is also a moderately hot month in Glen Mary, Alabama, with average temperature varying between 83.7°F (28.7°C) and 64°F (17.8°C).

Temperature

In Glen Mary, the average high-temperature is essentially the same as in August - a warm 83.7°F (28.7°C). In Glen Mary, in September, the average low-temperature is 64°F (17.8°C).

Heat index

The average heat index is estimated at a hot 91°F (32.8°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 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like clothing, wind, differences in body mass, height, and shape, and activity influence one's weather impression. 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. 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

In Glen Mary, the average relative humidity is 74%.

Rainfall

In Glen Mary, it is raining for 14 days, with typically 2.68" (68mm) of accumulated precipitation. In Glen Mary, during the entire year, the rain falls for 174.6 days and collects up to 42.8" (1087mm) of precipitation.

Snowfall

In Glen Mary snow does not fall in April through October.

Daylight

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

Sunshine

The average sunshine in September is 9h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. 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.
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FAQ

What is the temperature in September in Glen Mary?

In Glen Mary, in September, the average high-temperature is 83.7°F (28.7°C), and the average low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines air temperature and relative humidity, in September is appraised at 91°F (32.8°C).

What is the average humidity in September in Glen Mary?

The average relative humidity in September is 74%.

How many days does it rain in September in Glen Mary?

In Glen Mary, Alabama, during September, the rain falls for 14 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow in Glen Mary?

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

What is the average length of the day in September in Glen Mary?

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

How long on average sun shines in September in Glen Mary?

In September, the average sunshine in Glen Mary is 9h.

What is the UV index intensity in September in Glen Mary?

In Glen Mary, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.

Average temperature in September
Glen Mary, AL

Average temperature in September - Glen Mary, AL
  • Average high temperature in September: 83.7°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in September: 64°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (34°F).

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Average pressure in September
Glen Mary, AL

Average pressure in September - Glen Mary, 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 (29.97").

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Average wind speed in September
Glen Mary, AL

Average wind speed in September - Glen Mary, AL
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in September
Glen Mary, AL

Average humidity in September - Glen Mary, 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%).

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Average rainfall in September
Glen Mary, AL

Average rainfall in September - Glen Mary, AL
  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is December (4.45").
The driest month (with the least rainfall) is November (2.4").

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Average rainfall days in September
Glen Mary, AL

Average rainfall days in September - Glen Mary, AL
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (10.3 days).

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Average snowfall in September
Glen Mary, AL

Average snowfall in September - Glen Mary, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is February (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
Glen Mary, AL

Average snowfall days in September - Glen Mary, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.1 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
Glen Mary, AL

Average daylight in September / Average sunshine in September - Glen Mary, 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: 9h

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

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Average sunshine days in September
Glen Mary, AL

Average sunshine days in September - Glen Mary, AL
  • Average sunshine days in September: 13.2 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is August (9.3 days).

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Average UV index in September
Glen Mary, AL

Average UV index in September - Glen Mary, AL
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Glen Mary, AL

Average cloud cover in September - Glen Mary, AL
  • Average cloud cover in September: 30

Months with the most cloud cover are February and December (Cloud cover 49).
Months with the least cloud cover are June and September (Cloud cover 30).

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Average visibility in September
Glen Mary, AL

Average visibility in September - Glen Mary, AL
  • Average visibility in September: 6mi

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

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