September weather forecast
Libertyville, AL

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Weather in September

September, the first month of the autumn in Libertyville, is also a hot month, with an average temperature varying between 87.3°F (30.7°C) and 68.7°F (20.4°C).

Temperature

Entering September, the average high-temperature is recorded at a still tropical 87.3°F (30.7°C), exhibiting a minimal shift from August's 90.7°F (32.6°C). The average nighttime temperature lowers to a pleasant 68.7°F (20.4°C) throughout September.

Heat index

The heat index value for September is evaluated at a sweltering 100.4°F (38°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In September, the average relative humidity is 74%.

Rainfall

March, September and November are months with the least rain when the rain falls for 12.1 days and typically aggregates up to 0.75" (19mm) of rain.

Snowfall

March through November are months without snowfall.

Daylight

In Libertyville, Alabama, the average length of the day in September is 12h and 20min.
On the first day of September in Libertyville, sunrise is at 6:22 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:31 pm CDT.

Sunshine

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

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 6 during September translates into the following guidance:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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Frequently asked questions

How hot is it in Libertyville in September?

In September, in Libertyville, the average high-temperature is 87.3°F (30.7°C), and the average low-temperature is 68.7°F (20.4°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 100.4°F (38°C).

What is the average humidity in September in Libertyville?

In Libertyville, Alabama, the average relative humidity in September is 74%.

What is the driest month in Libertyville?

March, September and November are months with the least rain when the rain falls for 12.1 days and typically aggregates up to 0.75" (19mm) of rain.

How much does it rain in Libertyville in September?

In September, in Libertyville, Alabama, the rain falls for 12.1 days. Throughout September, 0.75" (19mm) of precipitation is accumulated.

When it does not snow in Libertyville?

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

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

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

When are sunrise and sunset in September in Libertyville?

In September, on the first day of the month, sunrise is at 6:22 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:31 pm CDT.

How long on average sun shines in September in Libertyville?

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

What is the UV index reading in September in Libertyville?

In September, the average daily maximum UV index in Libertyville is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Libertyville, AL

Average temperature in September - Libertyville, AL
  • Average high temperature in September: 87.3°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (57.7°F).

  • Average low temperature in September: 68.7°F

The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).

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Average pressure in September
Libertyville, AL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

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Average wind speed in September
Libertyville, AL

Average wind speed in September - Libertyville, AL
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is January (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in September
Libertyville, AL

Average humidity in September - Libertyville, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Libertyville, AL

Average rainfall in September - Libertyville, AL
  • Average rainfall in September: 0.75"

The wettest month (with the highest rainfall) is August (1.65").
The driest months (with the least rainfall) are March, September and November (0.75").

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Average rainfall days in September
Libertyville, AL

Average rainfall days in September - Libertyville, AL
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (5.7 days).

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Average snowfall days in September
Libertyville, AL

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

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Libertyville, 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 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

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Average sunshine days in September
Libertyville, AL

Average sunshine days in September - Libertyville, AL
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is November (23.1 days).
The month with the least sunshine days is July (9.5 days).

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Average UV index in September
Libertyville, AL

Average UV index in September - Libertyville, AL
  • Average UV index in September: 6

The months with the highest UV index are May, 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
Libertyville, AL

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

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 28).

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Average visibility in September
Libertyville, AL

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

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

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Libertyville, Alabama, USA

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