September weather forecast and climate
Belleville, AR

Weather in September

The first month of the autumn, September, is also a moderately hot month in Belleville, Arkansas, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 84.6°F (29.2°C).

Temperature

In Belleville, the average high-temperature in September marginally drops, from a tropical 91.6°F (33.1°C) in August, to a moderately hot 84.6°F (29.2°C). In Belleville, Arkansas, the average low-temperature is 62.2°F (16.8°C).

Heat index

In September, the average heat index is calculated to a hot 93.2°F (34°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 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, differences in body mass, height, and shape, pregnancy). 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.

Humidity

In Belleville, the average relative humidity is 74%.

Rainfall

In Belleville, Arkansas, it is raining for 12.8 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, in Belleville, there are 149.2 rainfall days, and 36.65" (931mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

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

Sunshine

In September, the average sunshine in Belleville is 9.2h.

UV index

In September, the average daily maximum UV index in Belleville, Arkansas, is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.
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FAQ

What is the temperature in September in Belleville?

In September, the average high-temperature is 84.6°F (29.2°C), and the average low-temperature is 62.2°F (16.8°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, is estimated at 93.2°F (34°C).

What is the average humidity in September in Belleville?

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

How many days does it rain in September in Belleville?

In September, the rain falls for 12.8 days. Throughout September, 2.87" (73mm) of precipitation is accumulated.

When it does not snow in Belleville?

In Belleville, Arkansas, snow does not fall in April through October.

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

The average length of the day in September in Belleville is 12.4h.

How many hours of sunshine does Belleville have in September?

In September, the average sunshine is 9.2h.

What is the UV index intensity in September in Belleville?

In Belleville, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.

Average temperature in September
Belleville, AR

Average temperature in September - Belleville, AR
  • Average high temperature in September: 84.6°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (48.4°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

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Average pressure in September
Belleville, AR

Average pressure in September - Belleville, AR
  • 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 (29.94").

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Average wind speed in September
Belleville, AR

Average wind speed in September - Belleville, AR
  • Average wind speed in September: 4.3mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in September
Belleville, AR

Average humidity in September - Belleville, AR
  • Average humidity in September: 74%

The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in September
Belleville, AR

Average rainfall in September - Belleville, AR
  • Average rainfall in September: 2.87"

The wettest month (with the highest rainfall) is May (4.96").
The driest month (with the least rainfall) is January (2.09").

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Average rainfall days in September
Belleville, AR

Average rainfall days in September - Belleville, AR
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (9.3 days).

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Average snowfall in September
Belleville, AR

Average snowfall in September - Belleville, AR
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.71").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Belleville, AR

Average snowfall days in September - Belleville, AR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.8 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Belleville, AR

Average daylight in September / Average sunshine in September - Belleville, AR
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in September: 9.2h

Months with the most sunshine are June and July (Average sunshine: 10.6h).
Months with the least sunshine are January, February and December (Average sunshine: 5.4).

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Average sunshine days in September
Belleville, AR

Average sunshine days in September - Belleville, AR
  • Average sunshine days in September: 15.4 days

The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is May (13.2 days).

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Average UV index in September
Belleville, AR

Average UV index in September - Belleville, AR
  • Average UV index in September: 6

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

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Average cloud cover in September
Belleville, AR

Average cloud cover in September - Belleville, AR
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in September
Belleville, AR

Average visibility in September - Belleville, AR
  • Average visibility in September: 6mi

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

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