September weather forecast
Shannon, AL

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Shannon, Alabama, with temperature in the range of an average high of 85.1°F (29.5°C) and an average low of 66°F (18.9°C).

Temperature

September brings an average high-temperature of a moderately hot 85.1°F (29.5°C), nearly identical to the preceding month. Throughout September, the nighttime temperature averages to a comfortable 66°F (18.9°C).

Heat index

During September, the heat index is estimated at a tropical 93.2°F (34°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

In Shannon, the average relative humidity in September is 72%.

Rainfall

In September, the rain falls for 11.8 days. Throughout September, 1.06" (27mm) of precipitation is accumulated. In Shannon, during the entire year, the rain falls for 146.7 days and collects up to 18.94" (481mm) of precipitation.

Snowfall

In Shannon, Alabama, snow does not fall in April through November.

Daylight

The average length of the day in September in Shannon is 12h and 22min.
On the first day of the month, sunrise is at 6:22 am and sunset at 7:12 pm. On the last day of September, in Shannon, sunrise is at 6:41 am and sunset at 6:32 pm CDT.

Sunshine

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

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

How hot is it in Shannon in September?

September temperatures vary between a high-temperature of 85.1°F (29.5°C) and a low-temperature of 66°F (18.9°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in September is estimated at 93.2°F (34°C).

What is the average humidity in September in Shannon?

In September, the average relative humidity in Shannon, Alabama, is 72%.

How many days does it rain in September in Shannon?

In Shannon, Alabama, during September, the rain falls for 11.8 days and regularly aggregates up to 1.06" (27mm) of precipitation.

When it does not snow in Shannon?

In Shannon, snow does not fall in April through November.

How many hours of daylight does Shannon have in September?

In September, the average day length in Shannon, Alabama, is 12h and 22min.

What time are sunrise and sunset in September in Shannon?

In September, on the first day of the month, sunrise is at 6:22 am and sunset at 7:12 pm. On the last day of the month, in Shannon, sunrise is at 6:41 am and sunset at 6:32 pm CDT.

How many hours of sunshine does Shannon have in September?

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

What is the UV index intensity in September in Shannon?

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
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
Shannon, AL

Average temperature in September - Shannon, AL
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (51.3°F).

  • Average low temperature in September: 66°F

The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (36°F).

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Average pressure in September
Shannon, AL

Average pressure in September - Shannon, AL
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

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Average wind speed in September
Shannon, AL

Average wind speed in September - Shannon, AL
  • Average wind speed in September: 4.9mph

The windiest months (with the highest average wind speed) are February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in September
Shannon, AL

Average humidity in September - Shannon, AL
  • Average humidity in September: 72%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Shannon, AL

Average rainfall in September - Shannon, AL
  • Average rainfall in September: 1.06"

The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.02").

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Average rainfall days in September
Shannon, AL

Average rainfall days in September - Shannon, AL
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (7.3 days).

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Average snowfall in September
Shannon, AL

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

The month with the highest snowfall is January (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Shannon, AL

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

The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in September
Shannon, AL

Average sunshine days in September - Shannon, AL
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (9.4 days).

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Average UV index in September
Shannon, AL

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

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

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Average cloud cover in September
Shannon, AL

Average cloud cover in September - Shannon, AL
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, September and October (Cloud cover 30).

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Average visibility in September
Shannon, AL

Average visibility in September - Shannon, AL
  • Average visibility in September: 6mi

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

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Shannon, Alabama, USA

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