September weather forecast and climate
Chalkville, AL

The first month of the autumn, September, is still a warm month in Chalkville, Alabama, with average temperature ranging between min 64.6°F (18.1°C) and max 84.7°F (29.3°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a moderately hot 84.7°F (29.3°C). The average low-temperature, in September, is 64.6°F (18.1°C).

Heat index

The average heat index in September is estimated at a tropical 93.6°F (34.2°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. 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', 'feels like', 'real feel', or 'felt air temperature', 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, clothing, differences in body mass, height, and shape), and activity. 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in Chalkville is 74%.

Rainfall

In Chalkville, during 12.1 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. In Chalkville, during the entire year, the rain falls for 149 days and collects up to 19.88" (505mm) of precipitation.

Snowfall

April through October are months without snowfall in Chalkville.

Daylight

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

Sunshine

The average sunshine in Chalkville is 8.8h.

UV index

In Chalkville, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the temperature in September in Chalkville?

In Chalkville, in September, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 64.6°F (18.1°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that represents influence of the relative humidity to air temperaure, is calculated to 93.6°F (34.2°C).

What is the average humidity in September in Chalkville?

In September, the average relative humidity is 74%.

How many days does it rain in September in Chalkville?

In Chalkville, Alabama, in September, during 12.1 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

When it does not snow in Chalkville?

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

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

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

How many hours of sunshine does Chalkville have in September?

In September, the average sunshine is 8.8h.

What is the UV index intensity in September in Chalkville?

In Chalkville, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Chalkville, AL
  • Average high temperature in September: 84.7°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 (50.7°F).

  • Average low temperature in September: 64.6°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).

Average pressure in September - Chalkville, AL
  • Average pressure in September: 30.01"

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 - Chalkville, AL
  • Average wind speed in September: 4.8mph

The windiest months (with the highest average wind speed) are January and February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

Average humidity in September - Chalkville, 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 - Chalkville, AL
  • Average rainfall in September: 1.14"

The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.06").

Average rainfall days in September - Chalkville, AL
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (7.9 days).

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

The month with the highest snowfall is January (0.2").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is February (1 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 - Chalkville, 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: 10h).

  • Average sunshine in September: 8.8h

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

Average sunshine days in September - Chalkville, AL
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.6 days).

Average UV index in September - Chalkville, 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 - Chalkville, AL
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 48).
Months with the least cloud cover are June and September (Cloud cover 30).

Average visibility in September - Chalkville, 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).