September weather forecast and climate
Wiley, AL

Weather in September

The first month of the autumn, September, is still a tropical month in Wiley, Alabama, with average temperature varying between 67.5°F (19.7°C) and 87.1°F (30.6°C).

Temperature

In Wiley, the average high-temperature is almost the same as in August - a still hot 87.1°F (30.6°C). The average low-temperature, in Wiley, is 67.5°F (19.7°C).

Heat index

The average heat index is appraised at a torrid 98.8°F (37.1°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like wind, clothing, 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 particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in Wiley is 72%.

Rainfall

In September, in Wiley, the rain falls for 14.4 days. Throughout September, 1.61" (41mm) of precipitation is accumulated. Throughout the year, in Wiley, Alabama, there are 156.3 rainfall days, and 26.34" (669mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Wiley.

Daylight

In Wiley, Alabama, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine is 8.8h.

UV index

The average daily maximum UV index in Wiley is 6. A UV Index estimate of 6 to 7 represents a high threat to health from the exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Wiley?

The average high-temperature, in September, in Wiley, Alabama, is 87.1°F (30.6°C), while the average low-temperature is 67.5°F (19.7°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines relative humidity and air temperature, is appraised at 98.8°F (37.1°C).

What is the average humidity in September in Wiley?

In September, the average relative humidity is 72%.

How many days does it rain in September in Wiley?

In Wiley, Alabama, during September, the rain falls for 14.4 days and regularly aggregates up to 1.61" (41mm) of precipitation.

When it does not snow in Wiley?

April through November are months without snowfall in Wiley, Alabama.

How many hours of daylight does Wiley have in September?

In Wiley, Alabama, the average length of the day in September is 12.4h.

How long on average sun shines in September in Wiley?

In Wiley, Alabama, the average sunshine in September is 8.8h.

What is the UV index intensity in September in Wiley?

In Wiley, Alabama, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
Wiley, AL

Average temperature in September - Wiley, AL
  • Average high temperature in September: 87.1°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (55°F).

  • Average low temperature in September: 67.5°F

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 (38.7°F).

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Average pressure in September
Wiley, AL

Average pressure in September - Wiley, AL
  • Average pressure in September: 29.99"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.97").

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Average wind speed in September
Wiley, AL

Average wind speed in September - Wiley, AL
  • Average wind speed in September: 5.4mph

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is July (4.9mph).

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Average humidity in September
Wiley, AL

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

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Wiley, AL

Average rainfall in September - Wiley, AL
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is August (2.91").
The driest month (with the least rainfall) is November (1.5").

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Average rainfall days in September
Wiley, AL

Average rainfall days in September - Wiley, AL
  • Average rainfall days in September: 14.4 days

The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (6.9 days).

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Average snowfall in September
Wiley, AL

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

The month with the highest snowfall is January (0.28").
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
Wiley, AL

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

The month with the highest number of snowfall days is January (0.5 days).
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
Wiley, AL

Average daylight in September / Average sunshine in September - Wiley, AL
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is June (Average sunshine: 10.8h).
Months with the least sunshine are February and December (Average sunshine: 5.1).

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Average sunshine days in September
Wiley, AL

Average sunshine days in September - Wiley, AL
  • Average sunshine days in September: 13.7 days

The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is July (7.4 days).

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Average UV index in September
Wiley, AL

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

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

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Average cloud cover in September
Wiley, AL

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

Months with the most cloud cover are February and December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 29).

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Average visibility in September
Wiley, AL

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

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

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