September weather forecast
Calvert, AL

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Weather in September

The first month of the autumn, September, is still a hot month in Calvert, Alabama, with an average temperature fluctuating between 88.5°F (31.4°C) and 69.1°F (20.6°C).

Temperature

The arrival of September brings an average high-temperature of a still tropical 88.5°F (31.4°C), closely following the temperature pattern of August. Calvert experiences a steady low-temperature of 69.1°F (20.6°C) throughout September.

Heat index

Throughout September, the heat index is evaluated at a blisteringly hot 105.8°F (41°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Calvert, the average relative humidity in September is 76%.

Rainfall

In Calvert, Alabama, during September, the rain falls for 17.5 days and regularly aggregates up to 3.03" (77mm) of precipitation. In Calvert, during the entire year, the rain falls for 180.8 days and collects up to 38.43" (976mm) of precipitation.

Snowfall

In Calvert, snow does not fall in March through November.

Daylight

In September, the average length of the day in Calvert is 12h and 20min.
On the first day of September, sunrise is at 6:28 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:38 pm CDT.

Sunshine

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

UV index

In September, the average daily maximum UV index in Calvert, Alabama, is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

How hot is it in Calvert in September?

The high-temperature, in September, in Calvert, records 88.5°F (31.4°C), while the low-temperature is 69.1°F (20.6°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in September is evaluated at 105.8°F (41°C).

What is the average humidity in September in Calvert?

In September, the average relative humidity is 76%.

How much does it rain in Calvert in September?

In September, the rain falls for 17.5 days. Throughout September, 3.03" (77mm) of precipitation is accumulated.

When it does not snow in Calvert?

In Calvert, Alabama, snow does not fall in March through November.

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

In September, the average day length in Calvert is 12h and 20min.

When are sunrise and sunset in September in Calvert?

In September, on the first day of the month, sunrise is at 6:28 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:38 pm CDT.

How many hours of sunshine does Calvert have in September?

In Calvert, the average sunshine duration in September is 8.9h.

What is the UV index reading in September in Calvert?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Calvert, AL

Average temperature in September - Calvert, AL
  • Average high temperature in September: 88.5°F

The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (58.1°F).

  • Average low temperature in September: 69.1°F

The month with the highest average low temperature is August (73.6°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

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Average pressure in September
Calvert, AL

Average pressure in September - Calvert, AL
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in September
Calvert, AL

Average wind speed in September - Calvert, AL
  • Average wind speed in September: 4.3mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).

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Average humidity in September
Calvert, AL

Average humidity in September - Calvert, AL
  • Average humidity in September: 76%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Calvert, AL

Average rainfall in September - Calvert, AL
  • Average rainfall in September: 3.03"

The wettest month (with the highest rainfall) is August (5.08").
The driest month (with the least rainfall) is November (2.13").

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Average rainfall days in September
Calvert, AL

Average rainfall days in September - Calvert, AL
  • Average rainfall days in September: 17.5 days

The month with the highest number of rainy days is July (24.7 days).
The month with the least rainy days is November (8.3 days).

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Average snowfall in September
Calvert, AL

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

The month with the highest snowfall is January (0.31").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Calvert, AL

Average snowfall days in September - Calvert, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Calvert, AL

Average daylight in September / Average sunshine in September - Calvert, AL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).

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Average sunshine days in September
Calvert, AL

Average sunshine days in September - Calvert, AL
  • Average sunshine days in September: 10 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is July (5 days).

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Average UV index in September
Calvert, AL

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

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in September
Calvert, AL

Average cloud cover in September - Calvert, AL
  • Average cloud cover in September: 33

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 30).

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Average visibility in September
Calvert, AL

Average visibility in September - Calvert, AL
  • Average visibility in September: 5mi

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

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Calvert, Alabama, USA

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