September weather forecast
Tunnel Springs, AL

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Weather in September

September, the first month of the autumn in Tunnel Springs, is still a hot month, with an average temperature fluctuating between 68°F (20°C) and 88°F (31.1°C).

Temperature

With the onset of September, a modest change to a still tropical 88°F (31.1°C) from August's 91.9°F (33.3°C) is noted in high-temperature. Tunnel Springs experiences a nighttime temperature average of 68°F (20°C) during September.

Heat index

In September, the heat index is calculated to be a very hot 102.2°F (39°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Tunnel Springs, the average relative humidity in September is 75%.

Rainfall

In Tunnel Springs, during September, the rain falls for 17 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 174.1 rainfall days, and 36.02" (915mm) of precipitation is accumulated.

Snowfall

In Tunnel Springs, snow does not fall in April through November.

Daylight

In September, the average length of the day is 12h and 21min.
On the first day of the month, sunrise is at 6:25 am and sunset at 7:12 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:34 pm CDT.

Sunshine

In Tunnel Springs, the average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Frequently asked questions

How hot is it in September?

An average high-temperature, in September, in Tunnel Springs, is 88°F (31.1°C) and the average low-temperature is 68°F (20°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in September is calculated to be 102.2°F (39°C).

What is the average humidity in September?

In Tunnel Springs, the average relative humidity in September is 75%.

How many days does it rain in September?

In Tunnel Springs, in September, it is raining for 17 days, with typically 2.52" (64mm) of accumulated precipitation.

When it does not snow?

April through November are months without snowfall.

How many hours of daylight does Tunnel Springs have in September?

In Tunnel Springs, the average day length in September is 12h and 21min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:25 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:34 pm CDT.

How many hours of sunshine does Tunnel Springs have in September?

In Tunnel Springs, the average sunshine duration in September is 8.7h.

What is the UV index intensity in September?

In Tunnel Springs, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's 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
Tunnel Springs, AL

Average temperature in September - Tunnel Springs, AL
  • Average high temperature in September: 88°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 (56.8°F).

  • Average low temperature in September: 68°F

The months with the highest average low temperature are July and August (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in September
Tunnel Springs, AL

Average pressure in September - Tunnel Springs, 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).

Average wind speed in September
Tunnel Springs, AL

Average wind speed in September - Tunnel Springs, AL
  • Average wind speed in September: 4.7mph

The windiest months (with the highest average wind speed) are February, March and April (6.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

Average humidity in September
Tunnel Springs, AL

Average humidity in September - Tunnel Springs, AL
  • Average humidity in September: 75%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Tunnel Springs, AL

Average rainfall in September - Tunnel Springs, AL
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is August (4.49").
The driest month (with the least rainfall) is November (2.01").

Average rainfall days in September
Tunnel Springs, AL

Average rainfall days in September - Tunnel Springs, AL
  • Average rainfall days in September: 17 days

The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is November (7.5 days).

Average snowfall in September
Tunnel Springs, AL

Average snowfall in September - Tunnel Springs, 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").

Average snowfall days in September
Tunnel Springs, AL

Average snowfall days in September - Tunnel Springs, AL
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Tunnel Springs, AL

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

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

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in September
Tunnel Springs, AL

Average sunshine days in September - Tunnel Springs, AL
  • Average sunshine days in September: 11.3 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is July (5.4 days).

Average UV index in September
Tunnel Springs, AL

Average UV index in September - Tunnel Springs, AL
  • Average UV index in September: 6

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

Average cloud cover in September
Tunnel Springs, AL

Average cloud cover in September - Tunnel Springs, AL
  • Average cloud cover in September: 33

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 31).

Average visibility in September
Tunnel Springs, AL

Average visibility in September - Tunnel Springs, 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).

Tunnel Springs, Alabama, USA

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