September weather forecast and climate
DeFoor, AL

The first month of the autumn, September, is still a warm month in DeFoor, Alabama, with average temperature ranging between min 64°F (17.8°C) and max 83.7°F (28.7°C).

Temperature

In DeFoor, Alabama, the average high-temperature in September is almost the same as in August - a warm 83.7°F (28.7°C). In September, in DeFoor, the average low-temperature is 64°F (17.8°C).

Heat index

In September, the average heat index is evaluated at a hot 91°F (32.8°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 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, wind, clothing, and pregnancy affect individual temperature impact. 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 especially crucial for babies and toddlers. 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

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

Rainfall

In September, in DeFoor, the rain falls for 14 days. Throughout September, 2.68" (68mm) of precipitation is accumulated. Throughout the year, there are 174.6 rainfall days, and 42.8" (1087mm) of precipitation is accumulated.

Snowfall

In DeFoor snow does not fall in April through October.

Daylight

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

Sunshine

The average sunshine is 9h.

UV index

The average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. 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 DeFoor?

In September, in DeFoor, the average high-temperature is 83.7°F (28.7°C), and the average low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that factores the actual air temperature with the relative humidity, in September is estimated at 91°F (32.8°C).

What is the average humidity in September in DeFoor?

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

How many days does it rain in September in DeFoor?

In DeFoor, Alabama, in September, during 14 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When it does not snow in DeFoor?

April through October are months without snowfall in DeFoor.

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

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

How long on average sun shines in September in DeFoor?

The average sunshine in September in DeFoor, Alabama, is 9h.

How high is the UV index in September in DeFoor?

In DeFoor, 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 - DeFoor, AL
  • Average high temperature in September: 83.7°F

The warmest month (with the highest average high temperature) is July (89.4°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 (34°F).

Average pressure in September - DeFoor, 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 (29.97").

Average wind speed in September - DeFoor, AL
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in September - DeFoor, 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 - DeFoor, AL
  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is December (4.45").
The driest month (with the least rainfall) is November (2.4").

Average rainfall days in September - DeFoor, AL
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (10.3 days).

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

The month with the highest snowfall is February (0.75").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September - DeFoor, 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 - DeFoor, 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: 9h

The month with the most sunshine is June (Average sunshine: 10.5h).
Months with the least sunshine are February and December (Average sunshine: 4.7).

Average sunshine days in September - DeFoor, AL
  • Average sunshine days in September: 13.2 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is August (9.3 days).

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).

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

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

Average visibility in September - DeFoor, AL
  • Average visibility in September: 6mi

Months with the highest visibility are February, March, April, June, August, September, October, November and December (6mi).
Months with the lowest visibility are January, May and July (5mi).