September weather forecast and climate
Deer Park, AL

The first month of the autumn, September, is also a hot month in Deer Park, Alabama, with temperature in the range of an average low of 69.1°F (20.6°C) and an average high of 88.5°F (31.4°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a still tropical 88.5°F (31.4°C). In September, the average low-temperature is 69.1°F (20.6°C).

Heat index

In September, the average heat index is evaluated at a scorching 105.4°F (40.8°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. 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', 'apparent temperature', 'felt air temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, metabolic differences, clothing, and differences in body mass, height, and shape 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 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In September, the average relative humidity in Deer Park is 76%.

Rainfall

In Deer Park, during September, the rain falls for 17.5 days and regularly aggregates up to 3.03" (77mm) of precipitation. Throughout the year, there are 180.8 rainfall days, and 38.43" (976mm) of precipitation is accumulated.

Snowfall

In Deer Park snow does not fall in March through November.

Daylight

In Deer Park, the average length of the day is 12.3h.

Sunshine

The average sunshine in Deer Park is 8.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation 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. 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 Deer Park?

In Deer Park, in September, the average high-temperature is 88.5°F (31.4°C), and the average low-temperature is 69.1°F (20.6°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines both air temperature and relative humidity, in September is calculated to 105.4°F (40.8°C).

What is the average humidity in September in Deer Park?

In Deer Park, the average relative humidity in September is 76%.

How much does it rain in Deer Park in September?

In Deer Park, Alabama, in September, during 17.5 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

When it does not snow in Deer Park?

March through November are months without snowfall.

How many hours of daylight does Deer Park have in September?

In Deer Park, the average length of the day in September is 12.3h.

How long on average sun shines in September in Deer Park?

In Deer Park, the average sunshine in September is 8.9h.

What is the UV index reading in September in Deer Park?

In September, the average daily maximum UV index in Deer Park, Alabama, is 5. A UV Index reading of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Deer Park, AL
  • Average high temperature in September: 88.5°F

The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (58.1°F).

  • Average low temperature in September: 69.1°F

The month with the highest average low temperature is August (73.6°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

Average pressure in September - Deer Park, AL
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.96").

Average wind speed in September - Deer Park, AL
  • Average wind speed in September: 4.3mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).

Average humidity in September - Deer Park, AL
  • Average humidity in September: 76%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September - Deer Park, AL
  • Average rainfall in September: 3.03"

The wettest month (with the highest rainfall) is August (5.08").
The driest month (with the least rainfall) is November (2.13").

Average rainfall days in September - Deer Park, AL
  • Average rainfall days in September: 17.5 days

The month with the highest number of rainy days is July (24.7 days).
The month with the least rainy days is November (8.3 days).

Average snowfall in September - Deer Park, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.31").
Months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September - Deer Park, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.5 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Deer Park, AL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.9h

The month with the most sunshine is June (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 5.1).

Average sunshine days in September - Deer Park, AL
  • Average sunshine days in September: 10 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is July (5 days).

Average UV index in September - Deer Park, AL
  • Average UV index in September: 5

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September - Deer Park, AL
  • Average cloud cover in September: 33

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 30).

Average visibility in September - Deer Park, AL
  • Average visibility in September: 5mi

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