September weather forecast and climate
Colvins Gap, AL

The first month of the autumn, September, is still a warm month in Colvins Gap, Alabama, with average temperature ranging between min 63.9°F (17.7°C) and max 84°F (28.9°C).

Temperature

In Colvins Gap, the average high-temperature in September is essentially the same as in August - a warm 84°F (28.9°C). In Colvins Gap, Alabama, the average low-temperature is 63.9°F (17.7°C).

Heat index

In September, the average heat index is appraised at a tropical 91.9°F (33.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, clothing, metabolic differences, and differences in body mass, height, and shape affect individual temperature impact. 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 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.

Humidity

In September, the average relative humidity in Colvins Gap is 74%.

Rainfall

In Colvins Gap, during 12.9 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, there are 171.3 rainfall days, and 37.83" (961mm) of precipitation is accumulated.

Snowfall

In Colvins Gap snow does not fall in April through October.

Daylight

The average length of the day in Colvins Gap, Alabama, is 12.4h.

Sunshine

The average sunshine in September is 8.6h.

UV index

In Colvins Gap, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Colvins Gap?

In September, in Colvins Gap, the average high-temperature is 84°F (28.9°C), and the average low-temperature is 63.9°F (17.7°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines both air temperature and relative humidity, is appraised at 91.9°F (33.3°C).

What is the average humidity in September in Colvins Gap?

In September, the average relative humidity in Colvins Gap, Alabama, is 74%.

How much does it rain in Colvins Gap in September?

In Colvins Gap, Alabama, in September, during 12.9 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

When it does not snow in Colvins Gap?

April through October are months without snowfall in Colvins Gap.

How many hours of daylight does Colvins Gap have in September?

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

How long on average sun shines in September in Colvins Gap?

In September, the average sunshine in Colvins Gap is 8.6h.

What is the UV index intensity in September in Colvins Gap?

In Colvins Gap, Alabama, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Colvins Gap, AL
  • Average high temperature in September: 84°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (49.6°F).

  • Average low temperature in September: 63.9°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).

Average pressure in September - Colvins Gap, 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 - Colvins Gap, AL
  • Average wind speed in September: 4.6mph

The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

Average humidity in September - Colvins Gap, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September - Colvins Gap, AL
  • Average rainfall in September: 2.36"

The wettest months (with the highest rainfall) are February and December (3.9").
The driest month (with the least rainfall) is October (2.32").

Average rainfall days in September - Colvins Gap, AL
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is November (8.7 days).

Average snowfall in September - Colvins Gap, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.43").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September - Colvins Gap, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Colvins Gap, 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: 8.6h

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

Average sunshine days in September - Colvins Gap, AL
  • Average sunshine days in September: 14.9 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (8.8 days).

Average UV index in September - Colvins Gap, AL
  • Average UV index in September: 5

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

Average cloud cover in September - Colvins Gap, AL
  • Average cloud cover in September: 31

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

Average visibility in September - Colvins Gap, 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).