September weather forecast
Dearborn, LA

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Weather in September

The first month of the autumn, September, is also a hot month in Dearborn, Louisiana, with an average temperature varying between 68°F (20°C) and 87.8°F (31°C).

Temperature

The commencement of September notes an average high-temperature of a still hot 87.8°F (31°C), exhibiting little difference from the previous month. In September, the recorded average low-temperature is an agreeable 68°F (20°C).

Heat index

The heat index for September is computed to be a fiery hot 102.2°F (39°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

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

Rainfall

In Dearborn, in September, it is raining for 12.7 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 154.1 rainfall days, and 35.12" (892mm) of precipitation is accumulated.

Snowfall

April through December are months without snowfall.

Daylight

The average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:50 pm CDT.

Sunshine

The average sunshine in September is 9.7h.

UV index

In Dearborn, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 6 during September leads to these instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

How hot does it get in September?

The high-temperature, in September, in Dearborn, is 87.8°F (31°C), while the low-temperature averages to 68°F (20°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 102.2°F (39°C).

What is the average humidity in September?

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

How many days does it rain in September?

In Dearborn, in September, during 12.7 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

When it does not snow?

April through December are months without snowfall.

How many hours of daylight does Dearborn have in September?

In September, the average day length in Dearborn is 12h and 21min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:40 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:50 pm CDT.

How many hours of sunshine does Dearborn have in September?

In September, the average sunshine duration is 9.7h.

How high is the UV index in September?

The average daily maximum UV index in September in Dearborn is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Dearborn, LA

Average temperature in September - Dearborn, LA
  • Average high temperature in September: 87.8°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (55°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).

Average pressure in September
Dearborn, LA

Average pressure in September - Dearborn, LA
  • Average pressure in September: 29.98"Hg

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

Average wind speed in September
Dearborn, LA

Average wind speed in September - Dearborn, LA
  • 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 September (5.3mph).

Average humidity in September
Dearborn, LA

Average humidity in September - Dearborn, LA
  • Average humidity in September: 74%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (69%).

Average rainfall in September
Dearborn, LA

Average rainfall in September - Dearborn, LA
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is November (2.13").

Average rainfall days in September
Dearborn, LA

Average rainfall days in September - Dearborn, LA
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is August (15.5 days).
The month with the least rainy days is October (8.5 days).

Average snowfall in September
Dearborn, LA

Average snowfall in September - Dearborn, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Dearborn, LA

Average snowfall days in September - Dearborn, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September /
Average sunshine in September
Dearborn, LA

Average daylight in September / Average sunshine in September - Dearborn, LA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

Average sunshine days in September
Dearborn, LA

Average sunshine days in September - Dearborn, LA
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is February (13.3 days).

Average UV index in September
Dearborn, LA

Average UV index in September - Dearborn, LA
  • Average UV index in September: 6

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

Average cloud cover in September
Dearborn, LA

Average cloud cover in September - Dearborn, LA
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and October (Cloud cover 28).

Average visibility in September
Dearborn, LA

Average visibility in September - Dearborn, LA
  • Average visibility in September: 6mi

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

Dearborn, Louisiana, USA

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