September weather forecast and climate
Clinton, AL

September, the first month of the autumn, in Clinton, is still a hot month, with average temperature varying between 86.9°F (30.5°C) and 67.1°F (19.5°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still tropical 86.9°F (30.5°C). In Clinton, the average low-temperature is 67.1°F (19.5°C).

Heat index

The average heat index is estimated at a torrid 98.2°F (36.8°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, wind, differences in body mass, height, and shape), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In September, the average relative humidity is 72%.

Rainfall

The month with the least rainfall in Clinton, Alabama, is September when the rain falls for 12.5 days and typically collects 2.2" (56mm) of precipitation.

Snowfall

March through October are months without snowfall.

Daylight

The average length of the day in Clinton is 12.4h.

Sunshine

In Clinton, the average sunshine is 9.2h.

UV index

In September, the average daily maximum UV index in Clinton, Alabama, is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Clinton?

In Clinton, in September, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 67.1°F (19.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines relative humidity and air temperature, is evaluated at 98.2°F (36.8°C).

What is the average humidity in September in Clinton?

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

How much does it rain in Clinton in September?

In September, the rain falls for 12.5 days. Throughout September, 2.2" (56mm) of precipitation is accumulated.

What is the driest month in Clinton?

September is the month with the least rainfall in Clinton, Alabama. Rain falls for 12.5 days and accumulates 2.2" (56mm) of precipitation.

When it does not snow in Clinton?

March through October are months without snowfall.

How many hours of daylight does Clinton have in September?

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

How long on average sun shines in September in Clinton?

In Clinton, Alabama, the average sunshine in September is 9.2h.

How high is the UV index in September in Clinton?

In September, the average daily maximum UV index in Clinton is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Clinton, AL
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (53.4°F).

  • Average low temperature in September: 67.1°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (37.8°F).

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

The month with the highest atmospheric pressure is January (30.17").
Months with the lowest atmospheric pressure are June and August (29.97").

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

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

Average humidity in September - Clinton, 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 (69%).

Average rainfall in September - Clinton, AL
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (2.2").

Average rainfall days in September - Clinton, AL
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (20.5 days).
The month with the least rainy days is November (8.6 days).

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

The month with the highest snowfall is January (0.51").
Months with the least snowfall are March, April, May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is February (0.9 days).
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 - Clinton, 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: 10h).

  • Average sunshine in September: 9.2h

The month with the most sunshine is June (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

Average sunshine days in September - Clinton, AL
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (9.1 days).

Average UV index in September - Clinton, 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).

Average cloud cover in September - Clinton, AL
  • Average cloud cover in September: 29

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in September - Clinton, 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).