September weather forecast
Bonn, LA

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Weather in September

The first month of the autumn, September, is also a hot month in Bonn, Louisiana, with an average temperature fluctuating between 87.8°F (31°C) and 69.3°F (20.7°C).

Temperature

The average high-temperature during September is a still hot 87.8°F (31°C), almost matching the conditions of the preceding month. During the nights in September, Bonn observes an average low-temperature of 69.3°F (20.7°C).

Heat index

The heat index in September is estimated at a blistering 104°F (40°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to 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 body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

The average relative humidity in September in Bonn is 78%.

Rainfall

In Bonn, Louisiana, in September, during 17.7 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, in Bonn, Louisiana, there are 175 rainfall days, and 28.74" (730mm) of precipitation is accumulated.

Snowfall

February through November are months without snowfall in Bonn, Louisiana.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:41 am and sunset at 7:27 pm. On the last day of September, in Bonn, Louisiana, sunrise is at 6:58 am and sunset at 6:51 pm CDT.

Sunshine

In Bonn, the average sunshine in September is 9.5h.

UV index

In September, the average daily maximum UV index in Bonn is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

How hot is September in Bonn?

In Bonn, 87.8°F (31°C) is the average high-temperature and 69.3°F (20.7°C) is the average low-temperature during September. The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in September is estimated at 104°F (40°C).

What is the average humidity in September in Bonn?

In September, the average relative humidity in Bonn is 78%.

How many days does it rain in September in Bonn?

In Bonn, Louisiana, during September, the rain falls for 17.7 days and regularly aggregates up to 2.28" (58mm) of precipitation.

When it does not snow in Bonn?

In Bonn, Louisiana, snow does not fall in February through November.

How many hours of daylight does Bonn have in September?

The average day length in September is 12h and 20min.

When are sunrise and sunset in September in Bonn?

On the first day of September, sunrise is at 6:41 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:51 pm CDT.

How long on average sun shines in September in Bonn?

The average sunshine duration in September is 9.5h.

What is the UV index intensity in September in Bonn?

In Bonn, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
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
Bonn, LA

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

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (58.3°F).

  • Average low temperature in September: 69.3°F

The month with the highest average low temperature is August (73.4°F).
The coldest month (with the lowest average low temperature) is January (41.9°F).

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Average pressure in September
Bonn, LA

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

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

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Average wind speed in September
Bonn, LA

Average wind speed in September - Bonn, LA
  • Average wind speed in September: 4.5mph

The windiest month (with the highest average wind speed) is February (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.3mph).

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Average humidity in September
Bonn, LA

Average humidity in September - Bonn, LA
  • Average humidity in September: 78%

The months with the highest relative humidity are February and December (82%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Bonn, LA

Average rainfall in September - Bonn, LA
  • Average rainfall in September: 2.28"

The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is November (1.5").

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Average rainfall days in September
Bonn, LA

Average rainfall days in September - Bonn, LA
  • Average rainfall days in September: 17.7 days

The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in September
Bonn, LA

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

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

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Average snowfall days in September
Bonn, LA

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

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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

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

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

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in September
Bonn, LA

Average sunshine days in September - Bonn, LA
  • Average sunshine days in September: 9.9 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (6.8 days).

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Average UV index in September
Bonn, LA

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

The months with the highest UV index are May, June and July (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
Bonn, LA

Average cloud cover in September - Bonn, LA
  • Average cloud cover in September: 33

The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 29).

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Average visibility in September
Bonn, LA

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

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

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Bonn, Louisiana, USA

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