September weather forecast and climate
Danville, AL

The first month of the autumn, September, is still a warm month in Danville, Alabama, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 83.3°F (28.5°C).

Temperature

In Danville, the average high-temperature in September is almost the same as in August - a moderately hot 83.3°F (28.5°C). In September, the average low-temperature is 64°F (17.8°C).

Heat index

In September, the average heat index is evaluated at a hot 90.1°F (32.3°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. 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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, differences in body mass, height, and shape, metabolic differences). 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

In Danville, the average relative humidity is 74%.

Rainfall

In Danville, during 13.7 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, there are 173 rainfall days, and 41.38" (1051mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

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

Sunshine

In Danville, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Danville?

In Danville, in September, the average high-temperature is 83.3°F (28.5°C), and the average low-temperature is 64°F (17.8°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), that factores the actual air temperature with the relative humidity, is evaluated at 90.1°F (32.3°C).

What is the average humidity in September in Danville?

The average relative humidity in September in Danville is 74%.

How much does it rain in Danville in September?

In Danville, Alabama, in September, it is raining for 13.7 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow in Danville?

April through October are months without snowfall in Danville, Alabama.

How many hours of daylight does Danville have in September?

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

How long on average sun shines in September in Danville?

In September, the average sunshine in Danville is 8.8h.

What is the UV index intensity in September in Danville?

The average daily maximum UV index in September in Danville, Alabama, 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 - Danville, AL
  • Average high temperature in September: 83.3°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in September: 64°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).

Average pressure in September - Danville, 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 - Danville, AL
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in September - Danville, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September - Danville, AL
  • Average rainfall in September: 2.48"

The wettest month (with the highest rainfall) is December (4.25").
The driest month (with the least rainfall) is November (2.24").

Average rainfall days in September - Danville, AL
  • Average rainfall days in September: 13.7 days

The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (9.7 days).

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

The month with the highest snowfall is January (0.79").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is February (2.1 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 - Danville, 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: 8.8h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average sunshine days in September - Danville, AL
  • Average sunshine days in September: 14.4 days

The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is July (9.3 days).

Average UV index in September - Danville, 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 - Danville, AL
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in September - Danville, 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).