September weather forecast
Clarence, LA

Weather in September

September, the first month of the autumn in Clarence, is still a hot month, with temperature in the range of an average low of 68°F (20°C) and an average high of 88.9°F (31.6°C).

Temperature

In Clarence, Louisiana, the average high-temperature in September marginally drops from a hot 94.3°F (34.6°C) in August to a still tropical 88.9°F (31.6°C). In September, the average low-temperature is 68°F (20°C).

Heat index

In September, the average heat index is evaluated at a scorching 104.5°F (40.3°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, differences in body mass, height, and shape, clothing, and metabolic differences 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. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Clarence, the average relative humidity in September is 73%.

Rainfall

In September, the rain falls for 13.1 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. In Clarence, during the entire year, the rain falls for 142.7 days and collects up to 23.9" (607mm) of precipitation.

Snowfall

In Clarence, Louisiana, snow does not fall in April through November.

Daylight

The average length of the day in September is 12h and 21min.
On the first day of September, sunrise is at 6:47 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:58 pm CDT.

Sunshine

In Clarence, the average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Clarence?

In September, in Clarence, Louisiana, the average high-temperature is 88.9°F (31.6°C), and the average low-temperature is 68°F (20°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 104.5°F (40.3°C).

What is the average humidity in September in Clarence?

In September, the average relative humidity is 73%.

How many days does it rain in September in Clarence?

In Clarence, in September, during 13.1 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

When it does not snow in Clarence?

April through November are months without snowfall in Clarence.

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

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

When is the sunrise / sunset in September in Clarence?

In September, on the first day of the month, sunrise is at 6:47 am and sunset at 7:36 pm. On the last day of the month, in Clarence, Louisiana, sunrise is at 7:05 am and sunset at 6:58 pm CDT.

How long on average sun shines in September in Clarence?

In September, the average sunshine duration in Clarence, Louisiana, is 9.4h.

What is the UV index intensity in September in Clarence?

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Clarence, LA

Average temperature in September - Clarence, LA
  • Average high temperature in September: 88.9°F

The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is January (55.8°F).

  • Average low temperature in September: 68°F

The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).

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Average pressure in September
Clarence, LA

Average pressure in September - Clarence, LA
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Clarence, LA

Average wind speed in September - Clarence, LA
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is July (4.9mph).

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Average humidity in September
Clarence, LA

Average humidity in September - Clarence, LA
  • Average humidity in September: 73%

The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are August and October (71%).

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Average rainfall in September
Clarence, LA

Average rainfall in September - Clarence, LA
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is August (2.87").
The driest month (with the least rainfall) is November (1.3").

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Average rainfall days in September
Clarence, LA

Average rainfall days in September - Clarence, LA
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is August (15.9 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in September
Clarence, LA

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

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

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Average snowfall days in September
Clarence, LA

Average snowfall days in September - Clarence, 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 and November (0 days).

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

Average daylight in September / Average sunshine in September - Clarence, LA
  • Average daylight in September: 12h and 21min

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 7min).

  • Average sunshine in September: 9h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

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Average sunshine days in September
Clarence, LA

Average sunshine days in September - Clarence, LA
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is August (12.1 days).

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Average UV index in September
Clarence, LA

Average UV index in September - Clarence, 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).

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Average cloud cover in September
Clarence, LA

Average cloud cover in September - Clarence, LA
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 30).

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Average visibility in September
Clarence, LA

Average visibility in September - Clarence, LA
  • Average visibility in September: 5mi

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

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