September weather forecast and climate
Carlisle, AL

September, the first month of the autumn, in Carlisle, is also a moderately hot month, with average temperature varying between 82.4°F (28°C) and 63°F (17.2°C).

Temperature

In Carlisle, the average high-temperature in September is essentially the same as in August - a moderately hot 82.4°F (28°C). In Carlisle, the average low-temperature is 63°F (17.2°C).

Heat index

The average heat index is evaluated at a tropical 88.5°F (31.4°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like clothing, pregnancy, metabolic differences, and activity influence one's weather impression. 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.

Humidity

The average relative humidity in Carlisle is 75%.

Rainfall

In Carlisle, in September, it is raining for 15 days, with typically 2.56" (65mm) of accumulated precipitation. In Carlisle, during the entire year, the rain falls for 179.7 days and collects up to 41.89" (1064mm) of precipitation.

Snowfall

April through October are months without snowfall in Carlisle.

Daylight

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

Sunshine

The average sunshine in Carlisle is 8.7h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Carlisle?

The average high-temperature, in September, in Carlisle, Alabama, is 82.4°F (28°C), while the average low-temperature is 63°F (17.2°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines air temperature and relative humidity, is evaluated at 88.5°F (31.4°C).

What is the average humidity in September in Carlisle?

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

How much does it rain in Carlisle in September?

In Carlisle, in September, during 15 rainfall days, 2.56" (65mm) of precipitation is typically accumulated.

When it does not snow in Carlisle?

In Carlisle, Alabama, snow does not fall in April through October.

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

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

How long on average sun shines in September in Carlisle?

In September, the average sunshine in Carlisle is 8.7h.

What is the UV index intensity in September in Carlisle?

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.
Average temperature in September - Carlisle, AL
  • Average high temperature in September: 82.4°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (48.6°F).

  • Average low temperature in September: 63°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in September - Carlisle, AL
  • Average pressure in September: 30.02"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.98").

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

The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September - Carlisle, 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 (74%).

Average rainfall in September - Carlisle, AL
  • Average rainfall in September: 2.56"

The wettest month (with the highest rainfall) is December (4.45").
The driest month (with the least rainfall) is October (2.48").

Average rainfall days in September - Carlisle, AL
  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is November (10.3 days).

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

The month with the highest snowfall is January (0.83").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is February (1.9 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 8.7h

The month with the most sunshine is June (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.7h).

Average sunshine days in September - Carlisle, AL
  • Average sunshine days in September: 12.9 days

The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (8.6 days).

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

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 2).

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

The month with the most cloud cover is February (Cloud cover 49).
Months with the least cloud cover are June and September (Cloud cover 30).

Average visibility in September - Carlisle, 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).